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HSA Calculator

Project entered HSA contributions, scheduled distributions, and net growth while comparing annual contributions with a verified external limit.

Use this result well

Inputs that matter
Current HSA balance, planned annual contributions and distributions, whole projection years, an entered annual net-return scenario, and an externally verified annual HSA contribution limit
Output to expect
Amount above entered limit, planned contributions/distributions, funded and unfunded modeled distributions, modeled growth, and ending balance
How it works
Month-by-month cash-flow projection that applies an entered net return, adds equal contributions, funds scheduled distributions only from available balance, and never invents tax savings
  • Confirm HSA/HDHP eligibility, self-only or family coverage, eligible months, employer and other contributions, catch-up treatment, and the current limit.
  • Classify qualified expenses and reimbursement timing under current guidance; verify documentation, fees, investment risk, Form 8889 reporting, and taxes/additional tax for distributions separately.

Choose your path

Built around the job you need to finish

Project entered HSA contributions, scheduled distributions, net return, and available balance without deciding eligibility, qualified-expense treatment, tax savings, or investment suitability.

HSA-eligible worker planning contributions

Compare total planned annual contributions with a verified coverage/month-specific limit.

Confirm HDHP/HSA eligibility, eligible months, employer funding, all HSA contributions, coverage type, and catch-up rules before entering the limit.

Sees any modeled amount above the entered limit without assuming eligibility or a deduction.

Account owner planning reimbursements

Test whether scheduled cash distributions can be funded from the modeled balance.

Enter cash flows and horizon, then compare scheduled, funded, and unfunded distributions while retaining receipts and classification externally.

Does not treat a modeled distribution as qualified, reimbursable, or tax-free.

Investor evaluating an HSA balance scenario

Separate cash-flow arithmetic from product and investment decisions.

Enter a net-return assumption after fees and inspect modeled growth while reviewing plan options, liquidity needs, and loss risk separately.

Uses the result as a scenario, not a triple-tax or investment recommendation.

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Reference & details

How it works

Compare Contributions With an Entered Limit

The planned annual contribution is compared with the annual limit you enter. Confirm coverage type, eligible months, employer and employee funding, all HSAs, and any catch-up under current section 223 guidance before choosing that limit.

Amount above entered limit = max(0, planned annual contribution − entered limit)

Model Contributions and Distributions Month by Month

Each month applies the entered net return, adds one-twelfth of the annual contribution, and funds no more than the available balance toward one-twelfth of scheduled distributions. The balance never becomes negative.

Balance = prior balance × (1 + monthly net return) + monthly contribution − funded distribution

Do Not Invent Tax Savings

The model reports cash flows and growth only. Eligibility, deduction or payroll treatment, qualified expenses, reimbursement records, Form 8889, income inclusion, and additional tax depend on current facts and rules.

Cash-flow projection ≠ tax benefit or qualified-distribution determination

Updated: August 2026

Example Scenarios

Use the entered 2026 self-only general limit only after confirming the exact person's eligibility and eligible months.

Current Balance: $5,000Annual Contribution: $4,400Annual Distributions: $800Projection: 15 yearsEntered Net Return: 5%Entered Limit: $4,400

Shows contribution comparison, scheduled and funded distributions, modeled growth, and ending balance with no tax-savings estimate.

Include employer and employee amounts in an annual contribution larger than the entered limit.

Annual Contribution: $5,000Entered Limit: $4,400

Shows $600 above the entered limit without deciding eligibility, deduction, correction, or excise tax.

Test a short horizon with distributions larger than the amount the scenario can fund.

Current Balance: $100Annual Contribution: $0Annual Distributions: $1,200Projection: 1 yearEntered Net Return: 0%

Keeps the modeled balance at zero and separates funded from unfunded scheduled distributions.

FAQ

IRS Revenue Procedure 2025-19 lists $4,400 for self-only coverage and $8,750 for family coverage for 2026, before an applicable age-55 catch-up. Coverage, eligibility by month, employer funding, and other contributions can change the amount available to a person.

No. Confirm HDHP coverage, disqualifying coverage, Medicare status, dependency, eligible months, last-month-rule consequences, and current law under Publication 969.

No. They are cash-flow assumptions only. Expense type, date incurred, HSA establishment, insurance reimbursement, eligible person, documentation, and current section 213(d) rules control treatment.

A flat tax rate cannot establish federal, payroll, state, deduction, employer-contribution, or distribution treatment. The previous 22% shortcut has been removed.

No. The net return is user-entered. Review fees, cash needs, available options, risk, possible losses, and plan terms separately.

About HSA Calculator

This page performs a bounded HSA cash-flow projection. It adds equal monthly portions of the annual contribution, applies the entered net-return scenario, and funds equal scheduled distributions only from the available modeled balance. It does not determine HSA eligibility, qualified medical expenses, deductions, payroll-tax effects, reimbursement rights, investment suitability, or distribution tax.