Patient Out-of-Pocket Cost Calculator

Estimate your annual out-of-pocket healthcare costs based on your insurance plan details and expected utilization.

Amount you pay before insurance kicks in
Maximum you'll pay in a plan year (must be ≥ deductible)
Your share of costs after meeting the deductible
Your monthly insurance premium payment
Estimated total allowed medical costs before insurance adjustments
Number of primary care physician visits expected
Fixed copay per primary care visit (applied after deductible is met)
Number of specialist visits expected
Fixed copay per specialist visit (applied after deductible is met)
Total out-of-pocket cost for prescriptions (after any drug coverage)

Formula

Step 1 – Deductible Phase:
Deductible Paid = min(Total Medical Bills, Annual Deductible)

Step 2 – Coinsurance Phase:
Remaining After Deductible = max(0, Total Medical Bills − Deductible)
Coinsurance Paid = Remaining After Deductible × (Coinsurance Rate / 100)

Step 3 – Copays:
Copay Total = (PCP Visits × PCP Copay) + (Specialist Visits × Specialist Copay)
(Applied only after deductible is met)

Step 4 – Apply OOP Maximum:
Total OOP (excl. premium) = min(Deductible Paid + Coinsurance Paid + Copays + Rx, OOP Maximum)

Step 5 – Total Annual Cost:
Total Annual Cost = Total OOP (excl. premium) + (Monthly Premium × 12)

Effective OOP Rate:
Effective Rate = (Total OOP excl. premium / Total Medical Bills) × 100

Assumptions & References

  • Premiums are excluded from the out-of-pocket maximum per the Affordable Care Act (ACA), 42 U.S.C. § 18022.
  • The deductible is applied first; coinsurance applies only to costs exceeding the deductible.
  • Copays and prescription costs are assumed to count toward the out-of-pocket maximum (standard for ACA-compliant plans).
  • All medical costs are assumed to be for in-network, covered services at allowed amounts.
  • The calculator does not account for HSA/FSA contributions, balance billing, or non-covered services.
  • For 2024, the ACA OOP maximum limits are $9,450 (individual) and $18,900 (family) — HealthCare.gov, 2024.
  • Coinsurance typically ranges from 10%–40% depending on plan tier (Bronze, Silver, Gold, Platinum).
  • Reference: Kaiser Family Foundation, Employer Health Benefits Survey 2023; CMS.gov.

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