How to Fill Out and Submit a 401(k) Loan Application Form

A 401(k) loan application form is the document you submit to your plan administrator to borrow from your own retirement account, and in most plans you can complete it through the participant portal in a single sitting once you have your vested balance, the amount you want to borrow, the loan type, and your deposit account details in hand. Federal law caps the loan at the lesser of $50,000 or 50% of your vested balance, with repayment generally within five years through automatic payroll deductions.¹ The form itself is short. The decisions behind the entries are what matter.

Confirm Your Plan Allows Loans

Federal law permits 401(k) loans but doesn’t require plans to offer them, so the first thing to check is whether your plan has a loan provision at all.² This is spelled out in your Summary Plan Description, available from HR or the plan’s online portal. The SPD also carries the details that vary plan to plan: minimum loan amounts, how many loans you can have outstanding at once, whether you need to state a reason for borrowing, and the plan’s own borrowing maximum, which can be lower than the federal cap.

Federal law does not limit the number of simultaneous loans, but your plan document might. Where multiple loans are allowed, each must independently meet the repayment rules and their combined balance cannot exceed the overall cap.³

Know Your Borrowing Limit Before You Enter a Dollar Amount

The federal cap under IRC Section 72(p) is not a flat $50,000. It’s a two-part calculation, and the smaller result is your ceiling:

$50,000, reduced by your highest outstanding loan balance during the 12 months before the new loan date.
The greater of $10,000 or 50% of your vested account balance.

Your maximum is whichever of those two is lower.³ The 12-month lookback trips people up. If you borrowed $30,000 last year and have since paid it down to $5,000, the first-part limit is $50,000 minus $30,000, or $20,000, not $45,000. The high-water mark follows you for a full year.

The $10,000 floor helps smaller accounts. If your vested balance is $15,000, half is $7,500, but you can still borrow up to $10,000.² Your plan can impose a lower limit than federal law allows.

What to Have Ready

Before opening the application, pull together:

Your Social Security number and plan ID. Both appear on your plan statements; the plan ID is the employer identification number paired with a three-digit plan number.
Your current vested balance. Log into the participant portal or call the plan’s toll-free number. The figure drives your borrowing cap and can shift daily with the market.
A signed purchase contract, if you’re buying a primary residence. Most administrators require this to unlock a repayment period longer than five years.
Spousal consent, if your plan requires it. Some plans require notarized spousal consent for loans over $5,000. This mainly applies to plans offering annuity-style payouts or holding money transferred from a plan subject to survivor annuity rules. Many 401(k) plans that pay death benefits entirely to the surviving spouse and don’t offer life annuity options are exempt. Your plan administrator can tell you which category your plan falls into.¹⁴
The routing and account number for the bank account where you want the funds deposited.

Filling Out the Form

Most administrators now offer the application through their online participant portal; some still use a paper form routed through HR. The fields are the same either way.

Loan Amount and Loan Type

Enter the dollar amount, then select a category. The two standard options are a general-purpose loan, which must be repaid within five years, and a residential loan for buying a primary home, which can run longer depending on plan terms.¹ If you’re buying a home, don’t pick general purpose by mistake. The shorter window means much larger payroll deductions, and the longer term is only available with the residential selection and supporting documentation.

Repayment Frequency

Payroll deduction is the default. You’ll typically pick whether deductions happen every pay period, monthly, or quarterly. Federal law requires at least quarterly payments on a level amortization schedule, meaning roughly equal payments across the loan’s life.⁵

Interest Rate

You usually can’t choose this. The plan sets it, typically at the prime rate plus one percentage point. With the prime rate at 6.75% as of mid-2025, most 401(k) loan rates run around 7.75%.⁶ Interest you pay flows back into your own account.

Banking Information

Enter the routing and account numbers for the receiving bank account. Verify the digits before you submit. An incorrect routing number can delay disbursement by a week or more while the ACH transfer bounces.

Submitting the Application

Online portals walk you through a multi-step confirmation screen showing the loan amount, repayment schedule, and interest rate before you finalize. If spousal consent or a purchase contract is required, you upload scans at this stage. The portal usually generates a confirmation number right away. Save it.

For paper applications, mail the completed form to the address your administrator specifies, using certified mail or another trackable service. Missing documents are the top reason paper applications stall, so put everything in one packet rather than sending items separately.

After You Submit

The administrator reviews the application to confirm the amount falls within federal and plan limits, that signatures are in place, and that you’re still employed. Electronic submissions typically clear in a few business days; paper takes longer. Timelines vary by administrator.

Once approved, you’ll receive a promissory note and an amortization schedule. The promissory note is the binding repayment agreement. The amortization schedule lists every payment date, the split between principal and interest, and the declining balance. Read it before the first deduction hits so there’s no surprise about what comes out of each paycheck.

Funds are disbursed by ACH to your linked account, or less often by paper check. Many plans charge an origination fee at issuance and a smaller ongoing maintenance fee for each quarter the loan is outstanding. The amounts are disclosed in the promissory note.

Repayment starts on your next payroll cycle after disbursement. Each installment pays both principal and interest, and both go back into your 401(k).

Before You Sign: What the Form Doesn’t Spell Out

Three risks sit outside the application itself but attach to every loan.

Leaving your job accelerates the loan. When you separate from your employer, most plans treat the outstanding balance as a “plan loan offset,” which counts as a distribution. You can avoid taxes and the 10% early withdrawal penalty by rolling the offset amount into an IRA or another eligible retirement plan. For a qualified plan loan offset triggered by separation, the rollover deadline is the due date of your federal return for that year, including extensions, which can push the deadline to October 15. Other plan loan offsets use the standard 60-day rollover window.⁷ The practical hurdle: you need the cash on hand to make the rollover, and the borrowed money is already spent.

Default is costly. A loan defaults when you miss a payment and don’t cure it by the end of the calendar quarter following the quarter the payment was due.⁸ The entire remaining balance then becomes a deemed distribution, added to that year’s taxable income, with an additional 10% penalty if you’re under 59½.⁹

The borrowed money stops earning returns. While it’s out of the account, it isn’t invested. The interest you pay yourself replaces cash you already had; it isn’t a return. Over a multi-year loan the foregone market growth can run well into four or five figures depending on the balance and conditions.

Prepayment is allowed under most plans, either by lump sum or by extra payments through the portal. Finishing early also frees up your borrowing capacity sooner, because the 12-month lookback on the $50,000 cap starts counting down from your highest balance.

1
Internal Revenue Service. Retirement Topics – Plan Loans
2
Internal Revenue Service. Retirement Plans FAQs Regarding Loans
3
Internal Revenue Service. Borrowing Limits for Participants With Multiple Plan Loans
4
Office of the Law Revision Counsel. 26 U.S. Code 417 – Definitions and Special Rules for Purposes of Minimum Survivor Annuity Requirements
5
Internal Revenue Service. 401(k) Plan Fix-It Guide – Participant Loans Do Not Conform to the Requirements of the Plan Document and IRC Section 72(p)
6
Federal Reserve. Selected Interest Rates (Daily)
7
Internal Revenue Service. Plan Loan Offsets
8
eCFR. 26 CFR 1.72(p)-1 – Loans Treated as Distributions
9
Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions