How much can I borrow from my 401(k)?

IRS rules allow you to borrow up to 50% of your vested 401(k) balance or $50,000, whichever is less. If your vested balance is $40,000, you can borrow up to $20,000. If your vested balance is $200,000, you can borrow up to $50,000 — the maximum regardless of balance size.

Do you pay taxes on a 401(k) loan?

No — not if you repay it. A 401(k) loan is not considered taxable income when you receive it, and you repay it with after-tax dollars. However, if you default on the loan (fail to repay it), the outstanding balance becomes taxable income AND subject to a 10% early withdrawal penalty if you're under 59½.

What is the repayment period for a 401(k) loan?

Most 401(k) loans must be repaid within 5 years. The exception is loans used to purchase your primary residence, which may have longer repayment terms (typically 10–15 years, depending on plan rules). Repayments are made through automatic payroll deductions.

What happens to my 401(k) loan if I leave my job?

If you leave your employer — voluntarily or involuntarily — most plans require you to repay the outstanding loan balance within 60–90 days. If you can't repay it, the balance is treated as a distribution: taxable income plus a 10% early withdrawal penalty if you're under 59½. You have until your tax filing deadline to roll the amount into an IRA to avoid taxes.

401(k) Loan 2026 — Rules, Limits, Risks, and Alternatives

A 401(k) loan lets you borrow against your retirement savings without taxes or penalties — as long as you repay it. In 2026, you can borrow up to $50,000 or 50% of your vested balance, whichever is less. But the risks are significant, and most financial planners recommend exhausting other options first.

401(k) Loan Rules at a Glance (2026)

Rule	Detail
Maximum loan amount	$50,000 or 50% of vested balance (whichever is less)
Maximum repayment period	5 years (longer for primary home purchase)
Interest rate	Prime rate + 1–2% (paid back to your own account)
Repayment method	Automatic payroll deductions
Number of loans allowed	Depends on plan (often 1–2 at a time)
Tax on loan proceeds	None (if repaid on schedule)
Default consequence	Treated as taxable distribution + 10% penalty if under 59½

How a 401(k) Loan Works

Apply through your plan administrator — most 401(k) plans allow loans; check your Summary Plan Description or contact HR
Receive the funds — typically via check or direct deposit within a few business days
Repay via payroll deductions — automatic repayments come out of each paycheck after-tax
Pay interest to yourself — the interest you pay goes back into your 401(k) account, not to a lender

Important: Not all 401(k) plans permit loans. The plan document must specifically allow them — verify with your plan administrator before assuming you can borrow.

The Real Cost of a 401(k) Loan

A 401(k) loan appears free — you’re “paying yourself back.” But there are real hidden costs:

1. Lost Investment Growth (Opportunity Cost)

When you borrow from your 401(k), that money is no longer invested. If the market returns 8% and you’ve borrowed $30,000 for 3 years:

Foregone growth: $30,000 × 8% × 3 years ≈ $7,776 in lost earnings

The interest you pay back (say 7% prime + 1%) is approximately the same as the interest on a personal loan — except the loan proceeds represent lost market participation.

2. Double Taxation on Repayments

You repay a 401(k) loan with after-tax dollars (from your paycheck). When you eventually withdraw that money in retirement, you pay taxes again. So the repayment dollars are effectively taxed twice — once as current income when you earn and repay, once as retirement income when you withdraw.

3. Job Loss Risk

If you leave your job while you have an outstanding 401(k) loan, the balance typically becomes due within 60–90 days. If you can’t repay:

The outstanding balance is taxable income in the year of default
A 10% early withdrawal penalty applies if you’re under 59½
You lose the retirement savings permanently

Example: You borrowed $20,000, have $12,000 remaining when you’re laid off. You can’t repay $12,000. Tax impact (22% bracket): $2,640 in income taxes + $1,200 in penalty = $3,840 immediate cost, plus permanent loss of the $12,000 from your retirement.

401(k) Loan vs. Early Withdrawal

Feature	401(k) Loan	Early Withdrawal (under 59½)
Income tax	No (if repaid)	Yes — full amount taxed
10% penalty	No (if repaid)	Yes (unless exception)
Impact on retirement	Opportunity cost	Permanent loss
Repayment required	Yes	No
Best for	Short-term need with certainty of repayment	Last resort only

The early withdrawal is almost always worse — use the loan if you must access 401(k) funds and can repay it.

When a 401(k) Loan Makes Sense

A 401(k) loan can be reasonable when:

You face a genuine emergency with no better alternatives
You are certain you will keep your job through the repayment period
The loan prevents a worse financial outcome (avoiding high-interest debt, foreclosure, etc.)
You can repay quickly — minimising opportunity cost and job-change risk

When to Avoid a 401(k) Loan

Your job security is uncertain
You’re close to retirement (less time to rebuild)
You would use the funds for discretionary spending
You have other borrowing options at reasonable rates
You’re already struggling financially (default risk is high)

Better Alternatives to a 401(k) Loan

Alternative	Best for
Emergency fund (HYSA)	First line of defence — build 3–6 months of expenses
Personal loan (6–12% APR)	Preserves retirement investments; predictable repayment
HELOC or home equity loan	Lower rates if you have home equity
0% APR credit card	Short-term needs if you can repay within the promotional period
Roth IRA contribution withdrawal	Penalty-free access to your own contributions
401(k) hardship withdrawal	True financial hardship; no repayment required but taxable

Worked Example: $20,000 401(k) Loan

Mark borrows $20,000 from his 401(k) at 7.5% interest, repaid over 3 years.

Monthly payment: ~$621 Total repaid: ~$22,356 Total interest paid back to account: ~$2,356

Lost investment opportunity (if S&P 500 returns 10%):

$20,000 growing at 10% for 3 years = $26,620
Actual account value (repaid principal + interest): ~$22,356
Opportunity cost: ~$4,264 in foregone growth

Plus the double-taxation on the $22,356 in after-tax repayments.

Mark’s total real cost: ~$4,264 in opportunity cost + estimated future tax on double-taxed repayments ($22,356 × 22% = ~$4,918) — approximately $9,182 total cost for a $20,000 loan that appeared “free.”

401(k) Loan at Different Balances

Vested balance	Maximum loan
$20,000	$10,000
$50,000	$25,000
$100,000	$50,000
$200,000	$50,000 (capped)
$500,000	$50,000 (capped)

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Bottom Line

A 401(k) loan is a legitimate tool for short-term financial emergencies — but it comes with real costs: opportunity cost, double taxation on repayments, and severe job-change risk. Borrow from your 401(k) only when you have no better alternative, you’re confident in your job security, and you can repay quickly. Build an emergency fund to make this a last resort, not a first option.

This article is for educational purposes only and does not constitute personalised financial advice.

Written by WealthVieu

WealthVieu researches and writes data-driven personal finance guides using primary sources including the IRS, Bureau of Labor Statistics, Federal Reserve, and Census Bureau.

The content on Wealthvieu is for informational purposes only and should not be considered financial, tax, or investment advice. Consult a qualified professional before making financial decisions. Full disclaimer · Editorial policy