See how HSA contributions change your coverage costs. Test employer deposits taxes and medical spending. Make smarter plan choices with clear shareable results today.
| Scenario | Employee HSA | Employer HSA | Allowed Charges | HDHP Premium (mo) | Traditional Premium (mo) | Key output |
|---|---|---|---|---|---|---|
| Light use | $1,500 | $1,000 | $1,000 | $220 | $360 | Often favors HDHP+HSA due to lower premium. |
| Moderate use | $3,000 | $1,000 | $4,000 | $220 | $360 | Compare net worth cost and paycheck impact. |
| Heavy use | $4,000 | $1,000 | $12,000 | $220 | $360 | Out-of-pocket max becomes the key driver. |
Premiums are predictable, but plan value depends on expected cost sharing. This calculator combines premium, deductible, coinsurance, copays, and the out-of-pocket maximum into one annual estimate. Using allowed charges, not billed charges, better matches negotiated rates. Low usage tends to favor lower premiums. Heavy usage shifts attention to the out-of-pocket maximum. Run several spending scenarios each year for confidence.
HSA contributions can create an immediate return through tax reduction. The model estimates savings from federal and state rates, and can include payroll savings when contributions run through payroll. Example: 22% federal and 4% state implies 26% savings; adding 7.65% payroll raises it to 33.65%. Higher marginal rates increase the advantage. Employer funding boosts the net result.
Cost sharing is applied in layers. You pay allowed charges up to the deductible. Coinsurance then applies to remaining allowed charges until the out-of-pocket maximum is reached. Copays for visits and prescriptions are added and also count toward the cap in this model. This makes moderate-use comparisons sensitive to copay design. Leave copays at zero if unknown.
The break-even estimate searches for the allowed-charge level where net worth costs converge. Net worth cost adjusts premiums and out-of-pocket costs by subtracting tax savings and employer HSA funding. If your expected charges sit below break-even, the HSA option often wins on premium and tax value. Above break-even, richer benefits may win. The chart shows where advantage flips.
If you pay current medical costs from the HSA, the year-end balance falls, but you keep more after-tax cash. If you pay costs outside the HSA, you may keep funds invested and grow them. The projection applies your return rate to the year-end balance for your chosen horizon. Longer horizons amplify compounding.
It is annual premium plus estimated out-of-pocket, minus tax savings from employee HSA contributions, minus employer HSA funding. It represents a value-adjusted comparison rather than pure cash spending.
Paycheck impact includes the employee contribution and any medical costs you choose to pay outside the HSA. Net worth cost treats employer funding and tax savings as value, and can exclude HSA-paid costs from take-home.
Allowed charges approximate negotiated in-network rates used for cost sharing. They are usually lower than billed charges, and they help the estimate reflect how deductibles and coinsurance apply in real claims processing.
Copays are added based on your visit and prescription counts. Coinsurance applies after the deductible to remaining allowed charges. The combined amount is capped at the plan’s out-of-pocket maximum in this model.
No. Preventive care, network exceptions, and service-specific rules can materially change costs. Use your plan documents for those details, and treat this tool as a planning baseline for broad comparisons.
The projection applies a constant return to the estimated year-end HSA balance. Returns are uncertain and fees may apply. Use it to compare scenarios and time horizons, not to predict a guaranteed future balance.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.