Borrow 401(k) Calculator

Display currencyFormatting only. This does not change the calculation.

Plan

Plan year

Annual salary

Current vested balance

Your contribution (% of salary)

Employer match rate (% of your contribution)A 50% match pays 50 cents for every dollar you defer. Ignored for the TSP, which has its own published schedule.

Employer matches up to (% of salary)

Your age now (years)

Age at retirement (years)

Assumed annual return (%)

Assumed annual salary growth (%)

Pay periods a year

Contribution type

Expected tax rate in retirement (%)

Amount withdrawn Early-withdrawal mode only.

How should the federal tax on a withdrawal be worked out?The bracket basis is the honest one: a distribution stacks on top of your other income, so it can span several brackets.

Filing statusUsed only by the bracket basis.

Your other ordinary income this year (USD)Used only by the bracket basis: wages and other income taxed at ordinary rates, before the withdrawal.

Federal marginal tax rate on the withdrawal (%)

State tax rate on the withdrawal (%)

A 72(t) exception applies (disability, separation at 55, QDRO, …)

Loan amount requested Loan mode only.

Loan interest rate (%)

Loan term (years)IRC 72(p)(2)(B) caps a general-purpose plan loan at five years.

Highest loan balance in the last 12 months

Plan permits the $10,000 minimum loan floor

Maximum plan loan

40,000.00

401(k) Calculator

Loan payment a month

386.66

Total loan interest

3,199.36

Worked out from IRS Notice 2025-67, 2026 amounts relating to retirement plans and IRAs and 4 other sources.

If you leave the employer the outstanding balance generally becomes due; an unpaid balance is treated as a taxable distribution and may attract the 10% additional tax.

An estimate based on the assumptions you enter. Contribution limits, the taxation of a distribution and the terms of a plan loan depend on your plan document, your filing position and your state — confirm with your plan administrator and a tax adviser before acting.

How this is worked out

3 steps

IRC 72(p)(2)(A) limit = min(50,000 - 0 highest prior balance, half the vested balance) = min(50000, 40000) = 40000.
Level repayment over 60 months at 0.5% a month = 386.66.
Total repaid = 23199.36, of which 3199.36 is interest paid back into your own account.

Results are general information, not financial, tax, legal, medical or engineering advice.