Model your yearly medical costs from premium to deductible, coinsurance, and out-of-pocket maximum.
Estimates only — not financial or medical advice. Always confirm with your insurer.
Percentage you pay after deductible (e.g., 20% means you pay 20%, insurer pays 80%)
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Last updated: December 10, 2025
Health insurance cost-sharing involves multiple layers that determine your total annual medical expenses. Understanding how these components interact—premiums, deductibles, coinsurance, copays, and the out-of-pocket maximum—is essential for choosing the right plan and budgeting accurately.
Premiums are the monthly amount you pay to maintain insurance coverage, regardless of whether you use any medical services. They are paid every month (or deducted from paychecks) and typically do not count toward your deductible or out-of-pocket maximum. Some rare plan designs may count premiums toward the OOP max, but this calculator treats premiums as a separate recurring baseline cost, which is the standard industry approach.
Premium amounts vary by plan type (HDHP, PPO, HMO), coverage tier (individual, individual+spouse, individual+children, family), and employer contribution. Marketplace plans show premiums before premium tax credits; employer plans show premiums after employer subsidies. Lower premiums usually mean higher deductibles and OOP maximums—this is the fundamental trade-off in plan selection.
The deductible is the amount you must pay out-of-pocket for covered services before your insurance begins paying its share through coinsurance. Once you meet the deductible, the insurance company starts sharing costs at the coinsurance rate (e.g., 80/20, where insurance pays 80% and you pay 20%).
Important exceptions: Some services bypass the deductible entirely:
Family plans have both individual and family deductibles. Once one family member meets the individual deductible, their services move to coinsurance. The family deductible is the maximum the entire family must pay before everyone moves to coinsurance—no single member can exceed the family deductible.
Coinsurance is the percentage you pay for covered services after meeting your deductible. Common coinsurance splits are 80/20 (insurance pays 80%, you pay 20%), 70/30, or 90/10. Coinsurance continues until you reach your out-of-pocket maximum, at which point the insurance covers 100% of remaining covered services for the rest of the year.
Example: You've met a $3,000 deductible and have 80/20 coinsurance. You undergo surgery with a $10,000 allowed amount. You pay 20% of $10,000 = $2,000 (coinsurance). This $2,000 accrues toward your out-of-pocket maximum. If this pushes you over the OOP max, you pay only enough to reach the cap, and insurance covers the rest at 100%.
Copays (copayments) are fixed dollar amounts you pay for specific services, such as $25 for a primary care visit, $50 for a specialist, $100 for urgent care, or $250 for an ER visit. Copays may apply before you meet your deductible (bypassing the deductible) or after the deductible (in lieu of coinsurance for those services).
Whether copays count toward your deductible and/or out-of-pocket maximum depends on plan rules. Many plans apply copays directly to the OOP max but not the deductible. Use the calculator's toggles to model your specific plan:
Prescription drug copays often work differently: they may have tiered copays (Tier 1 generics $10, Tier 2 preferred brand $40, Tier 3 non-preferred $80, Tier 4 specialty $200+) and may or may not apply to the medical deductible/OOP max depending on plan structure.
The out-of-pocket maximum (OOP max) is the most you'll pay in cost-sharing (deductible + coinsurance + copays that count toward OOP) for covered in-network services in a calendar year. Once you reach this cap, the insurance covers 100% of remaining covered services for the rest of the year.
What counts toward the OOP max: Deductible payments, coinsurance, and copays (if plan rules include them). What does NOT count: Premiums, out-of-network charges exceeding allowed amounts, non-covered services (cosmetic procedures, experimental treatments), and balance billing from non-contracted providers.
ACA-compliant plans have federally mandated OOP max limits (2024: $9,450 individual / $18,900 family). Employer plans often set lower limits (e.g., $5,000 individual / $10,000 family). Family plans have both individual and family OOP maximums—once one person reaches the individual OOP max, their services are covered at 100%; once the family collectively reaches the family OOP max, everyone is covered at 100%.
Your cost-sharing (deductible, coinsurance, copays) applies to the allowed amount, not the provider's billed charge. The allowed amount is the negotiated rate your insurance company has contracted with in-network providers. For example, a provider bills $10,000 for surgery, but the insurance's allowed amount is $6,000. Your coinsurance applies to the $6,000, not $10,000. The provider writes off the $4,000 difference—you never pay it.
Out-of-network care typically has:
This calculator models in-network care by default. Toggle "Out-of-network coverage" to apply separate deductibles/OOP max and higher coinsurance percentages.
Health Savings Accounts (HSAs) and Flexible Spending Accounts (FSAs) allow you to pay for eligible medical expenses with pre-tax dollars, reducing your after-tax cost by your marginal tax rate.
HSA: Available only with High Deductible Health Plans (HDHPs). Contributions are tax-deductible (or pre-tax via payroll), grow tax-free, and withdrawals for qualified medical expenses are tax-free (triple tax advantage). 2024 contribution limits: $4,150 individual / $8,300 family (+$1,000 catch-up if 55+). Funds roll over year-to-year and can be invested for long-term growth—many use HSAs as a retirement savings vehicle for future medical expenses.
FSA: Available with most employer plans. Contributions are pre-tax via payroll, but funds are use-it-or-lose-it (some plans allow $610 rollover or 2.5-month grace period). 2024 limit: $3,200. FSAs cannot be invested and must be spent each year, making them best for predictable recurring expenses (prescriptions, orthodontia, glasses).
This calculator applies your marginal tax rate to eligible out-of-pocket expenses paid with HSA/FSA dollars, showing your after-tax cost. For example, if you're in the 24% bracket and spend $5,000 on medical care via HSA, your after-tax cost is $5,000 × (1 - 0.24) = $3,800 effective cost due to the tax savings.
This calculator models real-world cost-sharing across four modes: Single Plan (estimate your costs), Compare Plans (side-by-side plan comparison), What-If (scenario testing), and Threshold (find break-even spend between plans). Follow these steps to get accurate results:
Input your plan's core parameters:
These toggles customize how copays, deductibles, and out-of-network care work:
Consult your plan's Summary of Benefits and Coverage (SBC) or Evidence of Coverage (EOC) documents to determine the correct settings.
Medical events represent actual healthcare utilization—doctor visits, procedures, prescriptions, etc. Adding events gives you a realistic cost projection rather than just plan parameters. Click "Add Event" and select from common presets:
Enter allowed amounts (not billed charges) for services without fixed copays. If you're unsure, use the preset ranges—they're based on national averages for in-network negotiated rates.
To see your after-tax out-of-pocket cost, enter your marginal tax rate (federal + state, e.g., 24% federal + 6% state = 30% total). The calculator assumes you pay eligible expenses with HSA/FSA pre-tax dollars, reducing your effective cost.
Example: You spend $5,000 on medical care. If paid with after-tax dollars, it costs $5,000. If paid with HSA/FSA at a 30% marginal rate, your after-tax cost is $5,000 × (1 - 0.30) = $3,500 (you saved $1,500 in taxes).
The calculator displays:
What-If Mode: Adjust medical event counts (e.g., "What if I need 2 more specialist visits?" or "What if I have surgery?") and see how it impacts your total cost and whether you hit the OOP max.
Compare Mode: Enter two plans side-by-side (e.g., HDHP with low premiums vs. PPO with high premiums) and see which costs less based on your expected utilization. The calculator highlights the cheaper option and shows the cost difference.
Threshold Mode: Find the break-even spend—the annual medical spend at which both plans cost the same. If you expect to spend below the break-even, choose the lower-premium plan; if above, choose the lower-deductible plan.
Pro Tip: Model a "worst-case" scenario with high utilization (multiple surgeries, chronic disease management, hitting the OOP max) to understand your financial risk. Then model a "best-case" (only preventive care, no major events) to see your minimum cost. Most years fall between these extremes—this range helps you choose the right plan and set aside emergency funds.
Every dollar you contribute to an HSA or FSA saves you your marginal tax rate. If you're in the 24% federal + 6% state bracket (30% total), a $3,000 HSA contribution saves you $900 in taxes—your effective medical cost drops from $3,000 to $2,100.
HSA strategy: If you have an HDHP, max out your HSA ($4,150 individual / $8,300 family in 2024). Pay current medical expenses out-of-pocket if you can afford it, and let the HSA grow tax-free for retirement healthcare costs (Medicare supplements, long-term care, or withdraw penalty-free at 65 for any purpose). This creates a triple-tax-advantaged retirement account.
FSA strategy: Contribute what you'll definitely spend each year (prescriptions, orthodontia, glasses, therapy sessions). Don't over-contribute—FSAs are use-it-or-lose-it. Some plans allow a $610 rollover or 2.5-month grace period; check your plan rules before deciding how much to contribute.
Out-of-network care typically costs 50-200% more due to higher allowed amounts, balance billing risk, and separate (higher) deductibles/OOP maximums. Always verify providers are in-network before scheduling non-emergency services. Use your insurer's online provider directory or call member services to confirm network status—directories can be outdated.
For emergency care, the No Surprises Act protects you from balance billing at out-of-network facilities (you pay in-network cost-sharing even if treated out-of-network). For non-emergency care, get a referral or pre-authorization for out-of-network services to avoid claim denials.
Shoppable services (imaging, lab work, outpatient procedures, colonoscopies, joint replacements) can vary 3-10× in cost even within the same network. Many insurers offer price transparency tools showing the negotiated rate at each facility. Use these tools to find the lowest-cost high-quality provider.
Example: An MRI might cost $400 at an independent imaging center vs. $2,000 at a hospital-based facility—both in-network with identical quality. Choosing the $400 option saves $1,600 and helps you meet your deductible/OOP max faster if you need future care.
Some insurers offer cash back or lower cost-sharing if you use high-value providers—ask if your plan has a "Centers of Excellence" or "Value Network" program.
Preventive care is covered at 100% with no deductible or copay for in-network services (ACA requirement). This includes annual physicals, vaccinations, cancer screenings (mammograms, colonoscopies, PSA tests), blood pressure/cholesterol checks, depression screening, and more.
Catching conditions early (high blood pressure, pre-diabetes, early-stage cancer) avoids expensive hospitalizations, surgeries, and chronic disease management later. A free annual physical that detects high cholesterol can prevent a $50,000 heart attack hospitalization.
If you expect high medical spend (chronic conditions, planned surgery, pregnancy, frequent specialists):
If you expect low medical spend (young, healthy, no chronic conditions):
Sometimes the cash price for a service or prescription is lower than your insurance's cost-sharing. This is common for:
Important: Cash-pay amounts do not count toward your deductible or OOP max. Only do this if you're early in the year with no expectation of hitting the deductible, or if you've already maxed out your OOP and want to save money on non-covered or excluded services.
Many brand-name drug manufacturers offer copay cards that reduce or eliminate your out-of-pocket cost for that specific medication. These cards can save $100-$500+ per fill for expensive specialty drugs (biologics, inhalers, injectables).
How they work: You present the copay card at the pharmacy along with your insurance card. The manufacturer pays some or all of your copay/coinsurance. Example: Your insurance charges $200 for a brand-name drug after deductible; the manufacturer's copay card covers $150, so you pay $50.
Catch: Some insurers don't count copay card payments toward your deductible/OOP max (copay accumulator programs). If your plan has this policy and you're trying to reach your OOP max, copay cards may delay you hitting the cap. If you're not close to the cap, the immediate savings are usually worth it.
Patient Assistance Programs (PAPs): For uninsured or low-income patients, PAPs provide free or heavily discounted medications. Apply through the manufacturer's website (requires proof of income and/or lack of insurance).
Emergency room visits cost 5-10× more than urgent care for non-life-threatening issues. ER copays are typically $250-$500; urgent care copays are $75-$150. If it's not an emergency (broken bone, severe bleeding, chest pain, stroke symptoms), go to urgent care.
Example conditions appropriate for urgent care: minor cuts needing stitches, sprains/strains, minor burns, flu symptoms, sore throat, ear infections, UTIs, rashes, minor allergic reactions. Reserve ER for true emergencies.
If a claim is denied, always appeal. Insurers deny 15-20% of claims initially, but 50% of appeals succeed. Common reasons for denials:
Appeals take 30-60 days but can save thousands. If the internal appeal is denied, you can request an external independent review (often free and required by law).
Understanding the step-by-step formulas behind medical cost-sharing helps you validate insurance quotes, spot billing errors, and plan budgets with confidence. Here's how the calculator models your out-of-pocket costs:
Annual Premium = Monthly Premium × 12
Premiums are the baseline recurring cost you pay regardless of medical utilization. They do not count toward your deductible or out-of-pocket maximum on most plans (except rare HDHP designs). Example: $400/month premium = $4,800/year baseline cost.
Deductible Met = SUM(Member Costs for Deductible-Applicable Services)
Services that count toward the deductible: non-preventive medical care (office visits if deductible applies first), imaging (MRI, CT, X-ray), lab work, outpatient procedures, inpatient hospital stays, surgery, and prescriptions (if no separate Rx deductible). Services that bypass the deductible: preventive care (annual physicals, vaccinations, screenings), copay-only services (if plan applies copays before deductible).
Once Deductible Met ≥ Deductible Amount, you move to the coinsurance phase for future services.
Member Cost = MIN(Allowed Amount, Remaining Deductible)
Example: You have $2,500 deductible; you've paid $1,800 so far ($700 remaining). You get an MRI with $900 allowed amount. You pay: MIN($900, $700) = $700. The remaining $200 moves to coinsurance (you pay 20% × $200 = $40).
Member Cost = Allowed Amount × Coinsurance %
Example: You've met your deductible. You have surgery with $10,000 allowed amount. You have 20% coinsurance. You pay: $10,000 × 0.20 = $2,000.
This $2,000 accrues toward your out-of-pocket maximum. If this pushes you over the OOP max, you only pay enough to reach the cap.
Member Cost = Fixed Copay Amount
Copays are set dollar amounts (e.g., $25 primary care, $50 specialist, $100 urgent care, $250 ER). Whether copays count toward the deductible/OOP max depends on plan rules (toggle in calculator).
OOP Accumulator = SUM(Deductible Payments + Coinsurance + Copays that count toward OOP)
Once OOP Accumulator ≥ OOP Max, insurance pays 100% of remaining covered services for the rest of the year. Member cost for all future services = $0 (except premiums).
After-Tax OOP = Total OOP × (1 - Marginal Tax Rate)
If you pay eligible medical expenses with HSA/FSA pre-tax dollars, your effective cost is reduced by your marginal tax rate. Example: $5,000 OOP at 24% federal + 6% state (30% total) = $5,000 × (1 - 0.30) = $3,500 after-tax cost. The $1,500 difference is your tax savings.
Total Annual Cost = Annual Premiums + Tax-Adjusted OOP - Employer HSA Contribution
Example: $4,800 premiums + $3,500 after-tax OOP - $1,000 employer HSA = $7,300 total annual medical cost.
Scenario:
Step-by-Step Calculation:
1. Annual Premiums:
$400/month × 12 = $4,800
2. Primary Care Visits (Copay-Only, Bypass Deductible):
3 visits × $25 = $75
These count toward OOP max but NOT deductible
3. Surgery (Subject to Deductible + Coinsurance):
Allowed amount: $10,000
Deductible phase: You pay $3,000 (meets deductible)
Remaining surgery cost: $10,000 - $3,000 = $7,000
Coinsurance on remaining: $7,000 × 20% = $1,400
Total member cost for surgery: $3,000 + $1,400 = $4,400
4. Total Out-of-Pocket (Before Tax):
$75 (copays) + $4,400 (surgery) = $4,475
5. OOP Maximum Status:
OOP accumulator: $75 (copays) + $3,000 (deductible) + $1,400 (coinsurance) = $4,475
OOP max: $7,000
Remaining before hitting OOP max: $7,000 - $4,475 = $2,525
Status: Not yet at OOP max; if you need more care, you'll pay 20% coinsurance on next $12,625 in services, then hit cap.
6. Tax-Adjusted OOP (HSA/FSA):
$4,475 × (1 - 0.30) = $3,133 after-tax
Tax savings: $4,475 - $3,133 = $1,342
7. Total Annual Cost:
$4,800 (premiums) + $3,133 (after-tax OOP) = $7,933 total
Key insight: If you need one more $5,000 procedure (e.g., imaging or outpatient surgery), you'd pay 20% × $5,000 = $1,000, which would add to your OOP accumulator ($4,475 + $1,000 = $5,475, still under $7,000 cap). To hit the OOP max this year, you'd need $2,525 more in OOP spend, which would require $12,625 in additional allowed amounts ($12,625 × 20% = $2,525).
Embedded deductible: Once one family member hits the individual deductible, that person moves to coinsurance. The family deductible is the maximum the entire family pays before everyone moves to coinsurance.
Example: Family plan with $6,000 individual / $12,000 family deductible. Person A incurs $7,000 in care—they pay $6,000 deductible (individual cap hit), then 20% coinsurance on remaining $1,000 = $200. Person B incurs $5,000—they're still in deductible phase and pay $5,000. Total family deductible paid: $6,000 + $5,000 = $11,000 (just under the $12,000 family cap). If Person B incurs another $1,500, the family pays $1,000 more to hit the $12,000 family cap, then everyone moves to coinsurance for the rest of the year.
Even with identical plan parameters, two people can have vastly different annual costs because:
Always model your specific expected utilization (office visits, prescriptions, planned procedures) rather than generic "average" costs. Use the calculator's event-by-event input to get realistic projections.
The Medical Out-of-Pocket Calculator helps you make smarter decisions in real-world scenarios. Here are eight common situations where accurate cost modeling makes a financial difference:
Scenario: Your employer offers a High Deductible Health Plan (HDHP) with $150/month premium, $3,000 deductible, $6,000 OOP max, and $1,000 employer HSA contribution vs. a PPO with $400/month premium, $1,000 deductible, $5,000 OOP max, no HSA.
How to use the calculator: Model both plans with your expected utilization (e.g., 3 primary care visits, 1 specialist, 12 monthly prescriptions). HDHP total: $1,800 premiums + $1,200 OOP - $1,000 employer HSA = $2,000. PPO total: $4,800 premiums + $800 OOP = $5,600. HDHP saves $3,600 for low utilization.
Decision insight: If healthy with low utilization, HDHP wins. If you expect high utilization (surgery, chronic disease), re-run with those events—PPO may become cheaper if you hit its lower OOP max faster.
Scenario: You're planning to get pregnant and want to budget for prenatal care, delivery, and postpartum costs. Delivery alone has $10,000–$15,000 allowed amounts.
How to use the calculator: Add medical events: 10–12 prenatal visits ($25–$50 copay each), delivery ($12,000 allowed amount, subject to deductible + coinsurance), postpartum visits (2–3 at $25 copay), potential complications (add $5,000–$10,000 if high-risk). Model shows you'll likely hit OOP max ($6,000–$8,000 depending on plan).
Decision insight: Choose a plan with the lowest OOP max, even if premiums are higher. Once you hit the cap mid-year, all remaining care (complications, NICU, pediatrician visits for baby) is covered at 100%. Budget your emergency fund for the OOP max + 20% buffer.
Scenario: You have Type 2 diabetes requiring quarterly endocrinologist visits, monthly primary care check-ins, daily insulin, continuous glucose monitor, and annual eye/foot exams.
How to use the calculator: Add events: 12 primary care visits ($25 copay), 4 specialist visits ($50 copay), 12 months insulin ($100/month Tier 3 copay), CGM supplies ($200/month), lab work every 3 months ($300 allowed amount each), annual eye exam ($150), annual podiatrist ($100). Calculator shows ~$4,800 annual OOP before hitting coinsurance/OOP max.
Decision insight: High recurring costs make low-deductible PPO plans more cost-effective than HDHPs. Max out FSA ($3,200) to pay for prescriptions and copays with pre-tax dollars, saving 24–35% on taxes. If your plan has high Rx copays, ask your doctor about manufacturer copay cards to reduce insulin costs.
Scenario: You need elective knee replacement surgery ($20,000 allowed amount). You've already spent $4,000 on medical care this year and are close to your $6,000 OOP max.
How to use the calculator: Model surgery this year: You've paid $4,000; OOP max is $6,000. Surgery pushes you to cap—you pay only $2,000 more (total: $6,000). Post-surgery physical therapy (20 sessions × $40 copay = $800) is covered 100% since you hit OOP max. Total annual cost: $6,000 OOP + $4,800 premiums = $10,800.
Decision insight: Schedule surgery this year while you're close to the OOP max. If you wait until January, you start fresh—surgery costs $3,000 deductible + $3,400 coinsurance = $6,400 OOP next year (plus PT costs). Timing saves $4,200.
Scenario: You're self-employed with $60,000 income qualifying for a $200/month premium tax credit. Marketplace offers Bronze ($50/month after subsidy, $7,000 deductible, $9,100 OOP max) vs. Gold ($350/month after subsidy, $1,500 deductible, $6,000 OOP max).
How to use the calculator: Model low utilization (healthy year): Bronze: $600 premiums + $500 care = $1,100. Gold: $4,200 premiums + $300 care = $4,500. Bronze wins by $3,400. Model high utilization (surgery): Bronze: $600 premiums + $9,100 OOP max = $9,700. Gold: $4,200 premiums + $6,000 OOP max = $10,200. Bronze still wins.
Decision insight: With premium subsidies, Bronze HDHP is often cheapest even for high utilization due to low premiums. Max out HSA contributions ($4,150) to offset the high deductible with tax savings.
Scenario: You, your spouse, and 2 kids need coverage. Employer offers: Family plan ($1,200/month, $6,000 individual / $12,000 family deductible, $6,000 individual / $12,000 family OOP max) vs. Individual plans for each adult ($400/month each, $3,000 deductible, $6,000 OOP max each) + kids on CHIP ($50/month/kid, minimal costs).
How to use the calculator: Family plan: $14,400 premiums + expected $8,000 family OOP = $22,400. Individual + CHIP: $9,600 adult premiums + $1,200 CHIP + $4,000 OOP (one adult hits max) = $14,800. Individual + CHIP saves $7,600.
Decision insight: If kids qualify for CHIP or Medicaid (income < 250% FPL in many states), avoid expensive family plans. Cover adults separately with HDHPs and max out HSAs for tax savings.
Scenario: You want to know how much to save in an emergency fund to cover a catastrophic medical event (heart attack, cancer diagnosis, major accident).
How to use the calculator: Model worst-case: Multiple ER visits ($250 copay each), surgery ($30,000 allowed amount), 5-day hospital stay ($2,000/day), ICU ($5,000/day), imaging, specialists, post-discharge care. Calculator shows you'll hit OOP max ($8,000). Add premiums ($4,800) + potential job loss buffer (3 months expenses).
Decision insight: Your medical emergency fund should cover: OOP max ($8,000) + annual premiums ($4,800) + 3–6 months living expenses ($15,000–$30,000). Total: $28,000–$43,000. This is separate from your general emergency fund. Once you hit the OOP max, insurance covers 100%—no additional medical costs for the rest of the year.
Scenario: You're turning 65 and enrolling in Medicare Part A (free) + Part B ($174.70/month). Considering whether to add Medigap Plan G ($150/month, covers Part B deductible + all coinsurance) vs. relying on Original Medicare alone (20% coinsurance on all Part B services, no OOP max).
How to use the calculator: Original Medicare only: $2,096 Part B premiums + potential $10,000 in Part B services × 20% coinsurance = $4,096 total. Medigap Plan G: $2,096 Part B + $1,800 Medigap + $0 OOP (Plan G covers everything) = $3,896. Plan G saves $200 and eliminates financial risk of unlimited coinsurance.
Decision insight: Medigap Plan G is almost always worth it for seniors with any medical utilization because Original Medicare has no OOP max. A single surgery could cost $20,000 × 20% = $4,000 in coinsurance vs. $0 with Plan G. The $1,800/year Medigap premium is insurance against catastrophic costs.
Even financially savvy people make these errors when budgeting for healthcare costs. Avoid these traps to prevent surprise bills and budget overruns:
Mistake: Assuming once you meet the $3,000 deductible, you pay $0 for the rest of the year. Reality: After the deductible, you pay coinsurance (e.g., 20%) until you hit the OOP max ($7,000). You could pay $4,000 more in coinsurance before reaching the cap.
Fix: Budget for the full OOP max, not just the deductible. If your plan has a $3,000 deductible and $7,000 OOP max, you may pay up to $7,000 total in a high-utilization year. Use the calculator to model how quickly you'll hit the OOP max based on expected care.
Mistake: Going to an out-of-network provider assuming your insurance will "cover some of it." You get a bill for $10,000; insurance pays $2,000 (based on their "reasonable and customary" rate); you owe $8,000 in balance billing (provider bills you for the difference).
Fix: Always verify providers are in-network before non-emergency care. Call your insurer or use their online directory. For emergency care, the No Surprises Act protects you from balance billing at out-of-network facilities (you pay in-network cost-sharing). For planned procedures, request pre-authorization and confirm all providers (surgeon, anesthesiologist, pathologist) are in-network.
Mistake: Budgeting $50/month for prescriptions when you actually need 3 medications costing $40 + $80 + $150 = $270/month ($3,240/year). This alone can blow your medical budget by $2,640.
Fix: List all recurring prescriptions with exact tier copays or coinsurance. Check your plan's formulary (drug list) to see which tier each drug falls into (Tier 1 generics: $10, Tier 2 preferred brand: $40, Tier 3 non-preferred: $80, Tier 4 specialty: $200+). Use manufacturer copay cards for brand-name drugs to reduce costs. Ask your doctor about generic alternatives.
Mistake: Assuming your family plan's $18,900 family OOP max is the only cap. Reality: If one family member hits the $9,450 individual OOP max, their care is covered 100% even if the family hasn't hit the $18,900 cap.
Fix: Model each family member's expected costs separately. If your spouse needs surgery ($15,000 allowed amount) and you're healthy, your spouse hits the $9,450 individual OOP max mid-year—all their remaining care is free. You still pay deductible/coinsurance for your own care up to the $9,450 individual cap or until the family collectively hits $18,900.
Mistake: Paying $5,000 in medical expenses with after-tax dollars. In the 24% federal + 6% state bracket (30% marginal rate), you effectively pay $5,000 when you could have paid $3,500 after-tax via HSA/FSA ($1,500 in lost tax savings).
Fix: If you have an HDHP, max out your HSA ($4,150 individual / $8,300 family in 2024). If you have a traditional plan, contribute to an FSA (up to $3,200 in 2024) but only what you'll definitely spend (FSAs are use-it-or-lose-it). Every dollar you contribute saves you your marginal tax rate. Use the calculator's tax-adjusted OOP cost to see your effective savings.
Mistake: Scheduling a "physical" but discussing a new health problem (e.g., back pain) during the visit. The doctor codes it as a diagnostic visit, and you get a bill for $150 applied to your deductible.
Fix: When scheduling a preventive visit, clarify it's for an "annual wellness exam." If you have new symptoms, expect a copay or deductible charge. Keep preventive and diagnostic visits separate if you want the preventive one to be free.
The information in this calculator is based on established healthcare policy and guidelines from authoritative organizations. For more detailed information about health insurance and out-of-pocket costs, please refer to these trusted sources:
Note: Health insurance terms and limits vary by plan. The 2025 ACA out-of-pocket maximum is $9,200 for individual coverage and $18,400 for family coverage. Always verify your specific plan details with your insurer.
Common questions about medical out-of-pocket costs, deductibles, coinsurance, and how this calculator works.
No. OOP caps typically exclude premiums; they cap **medical cost-share** only. Premiums are separate from your out-of-pocket medical expenses.
Depends on your plan. Use the toggles in the calculator to match your plan documents. Many plans have copays that apply before the deductible and count toward the OOP max, but not toward the deductible.
Allowed amount is the negotiated in-network price that your insurer has agreed to pay. We model costs on allowed amounts. The billed amount (what the provider charges) is often higher but doesn't affect your costs in-network.
This is an educational estimate based on plan rules you enter. Always confirm with your insurer and plan documents. Actual costs may vary based on specific services, network status, and plan variations.
Yes—toggle to Family and set individual vs family deductibles and OOPs. The calculator handles both embedded (per-person) and aggregate (family-wide) deductible rules based on your plan structure.
If your plan has out-of-network coverage, enable it in the plan rules and set separate OON deductible, coinsurance, and OOP max. Note that balance billing (charges above allowed amounts) is not modeled here.
Contributions to HSA or FSA accounts are typically tax-deductible. The calculator estimates tax savings based on your marginal tax rate and eligible contributions (up to IRS limits).
A copay is a fixed amount you pay (e.g., $25 for a visit). Coinsurance is a percentage you pay after meeting your deductible (e.g., 20% of allowed amounts). Both count toward your OOP max.
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Calculate your Body Mass Index (BMI) and understand what it means for your health.
Enter a blood pressure reading to see your category and general educational guidance.
Track workouts, monitor progress, and visualize fitness improvements over time.
Calculate fertile days and ovulation timing based on menstrual cycle data.