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Retirement · 401(k), IRA & Roth

Should I Borrow From My 401(k)?

Estimate the true cost of a 401(k)/403(b) loan by comparing lost investment growth against your repayments.

  • Free to use here · embed on the Business plan
  • 4 inputs · 4 results
  • English & Spanish

Try the Should I Borrow From My 401(k)?

See what borrowing really costs — results update as you type.

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Estimates only — not a loan offer or financial advice.

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What this calculator does

What the Should I Borrow From My 401(k)? calculator works out

The Should I Borrow From My 401(k)? is a free, embeddable calculator from CalcFunnel. Estimate the true cost of a 401(k)/403(b) loan by comparing lost investment growth against your repayments.

You enter 4 inputs: loan amount, loan interest rate (%), repayment term (years) and expected investment return (%).

It returns true cost of borrowing, value if left invested, value from repayments and monthly repayment.

Built for financial advisors and planners. Embedding it on your own website needs the Business plan (from $210/month, with a 14-day free trial), which unlocks the Retirement category.

Results it shows

  1. 01True Cost of Borrowing
  2. 02Value If Left Invested
  3. 03Value From Repayments
  4. 04Monthly Repayment

The first figure — true cost of borrowing — is the headline result.

Inputs

The inputs it uses

Each field below comes straight from the calculator, with the same help text visitors see when they hover the info icon.

The Loan

Loan Amount
How much you borrow from your retirement plan. The IRS limit is generally the lesser of $50,000 or 50% of your vested balance.
Loan Interest Rate (%)
The rate you pay yourself; this interest goes back into your account.
Repayment Term (years)
How long you take to repay the loan. General-purpose 401(k) loans must be repaid within 5 years (longer is allowed only for a primary-home purchase).

Investment Return

Expected Investment Return (%)
What the money would have earned if left invested.

For your website

Embed this calculator on your website

Put the Should I Borrow From My 401(k)? on your own site with your colors, copy and lead form. Every calculation can arrive in your CRM with the numbers attached.

Works on WordPress, Wix, Squarespace, Webflow, Shopify, GoHighLevel and plain HTML — paste one line into an HTML or code block. No plugin needed.

Start free How embedding works

Free plan, no card. 14-day trial on Pro & Business.

  1. Inline on any pagePaste the snippet where the calculator should appear. It fills the width of its container and resizes to fit its content.
  2. Popup buttonA button sits on your page; visitors click it and the calculator opens in a popup.
  3. Floating corner widgetPaste once — or in your site-wide footer code — to show a floating calculator bubble in the corner of every page.
  4. Open from your own link or buttonGive any existing link, button or image a class and it opens the calculator when clicked.
  5. Direct linkA full-page link to the calculator for emails, social posts, QR codes or a menu item.

FAQ

Should I Borrow From My 401(k)? calculator FAQs

Still stuck? Ask the team — we reply within one business day.

Q.01What does the Should I Borrow From My 401(k)? calculate?
Estimate the true cost of a 401(k)/403(b) loan by comparing lost investment growth against your repayments. It returns true cost of borrowing, value if left invested, value from repayments and monthly repayment.
Q.02What information do I need to use the Should I Borrow From My 401(k)??
You enter 4 inputs: loan amount, loan interest rate (%), repayment term (years) and expected investment return (%). Every input starts with a sensible default, so you can change only what you know.
Q.03What does “Loan Amount” mean in the Should I Borrow From My 401(k)??
How much you borrow from your retirement plan. The IRS limit is generally the lesser of $50,000 or 50% of your vested balance.
Q.04What does “Loan Interest Rate (%)” mean in the Should I Borrow From My 401(k)??
The rate you pay yourself; this interest goes back into your account.
Q.05Is the Should I Borrow From My 401(k)? free to use?
Yes — you can use it on this page for free, without an account. Embedding it on your own website needs the Business plan (from $210/month, with a 14-day free trial), which unlocks the Retirement category. Compare plans.
Q.06Can I embed the Should I Borrow From My 401(k)? on my website?
Yes. Embed it inline, as a popup button, as a floating corner widget, from your own link or button, or share a direct link. It works on WordPress, Wix, Squarespace, Webflow, Shopify, GoHighLevel and plain HTML sites with one line of code — see embedding.
Q.07Is the Should I Borrow From My 401(k)? available in Spanish?
Yes. Labels, tooltips and result names are available in English and Spanish, and visitors can switch language in the calculator.
Q.08Can the calculator capture leads?
Yes. It can end with a lead form, a Get a Quote form, a Share panel or a button to any URL. Leads are saved with the inputs and results attached and can be forwarded to your CRM by webhook.
Q.09Are the Should I Borrow From My 401(k)? results financial advice?
No. Estimates only. Assumes level monthly repayments returned to the plan and a constant investment return; it ignores taxes, fees, and the risk of default if you leave your job.

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