Health Insurance Plan Comparison Calculator

Compare the true annual cost of an HDHP with HSA versus a PPO plan. Enter premiums, deductibles, out-of-pocket maxes, and expected medical use to see which plan saves you more money.

Mathematical Audit

HDHP vs PPO Total Annual Cost Formula

Total annual cost for each plan combines annual premiums with out-of-pocket medical costs, then subtracts employer HSA contributions and HSA tax savings for the HDHP scenario.

HDHP Annual Premiums = Monthly Premium × 12
HDHP Medical OOP = min(Expected Medical, HDHP OOP Max)
HDHP HSA Tax Savings = Personal HSA Contribution × Marginal Tax Rate
HDHP Net Cost = Premiums + OOP − Employer HSA Contrib − HSA Tax Savings
PPO Net Cost = (Monthly Premium × 12) + min(Expected Medical OOP, PPO OOP Max)
Annual Savings = |PPO Net Cost − HDHP Net Cost|

2025 HDHP minimums: $1,650 deductible (self) / $3,300 (family). HSA limits: $4,300 (self) / $8,550 (family). OOP maximums applied as upper bounds on modeled spending.

Operational Guide

How to Use the Health Insurance Comparison Calculator

1

Enter your HDHP plan details

Input the monthly premium, annual deductible, and out-of-pocket maximum from your HDHP enrollment packet.

2

Add employer HSA contribution

Many employers seed HDHPs with $250–$1,000/year into your HSA — this reduces your effective cost.

3

Enter PPO plan details

Input the PPO's monthly premium, deductible, and out-of-pocket maximum for an apples-to-apples comparison.

4

Estimate expected annual medical costs

Think about your expected doctor visits, prescriptions, and planned procedures. Include your family's healthcare history.

5

Review the winner and savings

The calculator shows the net cost for each plan and how much you'd save annually with the better choice, including HSA tax savings.

Real-World Scenario Example

"HDHP: $250/mo premium, $1,650 deductible, $8,300 OOP max, employer puts $500 in HSA. PPO: $450/mo, $500 deductible, $5,000 OOP max. Expected medical: $2,000/year. Tax rate: 25%."

Inputs

coverageType:self
hdhpMonthlyPremium:250
hdhpDeductible:1650
hdhpOutOfPocketMax:8300
hdhpEmployerHsaContrib:500
ppoMonthlyPremium:450
ppoDeductible:500
ppoOutOfPocketMax:5000
expectedAnnualMedical:2000
marginalTaxRate:25

Result

HDHP net cost: ~$3,075. PPO net cost: ~$5,900. HDHP saves ~$2,825/year after HSA tax advantage.

Important Disclaimer

Plan cost comparisons are estimates based on simplified cost-sharing models. Actual costs depend on your specific plan's copays, coinsurance, and network. Review your Summary of Benefits and Coverage (SBC) for exact terms.