Finance category

Mortgage, loan, investing, tax, and money calculators.

Family Loan Calculator

Loans between family members are perfectly legal but must be structured as real loans — written note, interest at or above the IRS Applicable Federal Rate (AFR), scheduled repayments — to avoid being treated as gifts. Too little interest and the IRS imputes interest income to the lender and re-characterizes principal as a gift. This calculator sizes a compliant family loan.

Loan amount

Term (years)

AFR rate (current publication)

Loan structure

Balloon amount at maturity (IO)

Monthly payment

$777

Total interest over life

$18,275

Total paid (principal + interest)

$93,275

Annual interest (avg)

$1,827

How the math works

At $75K for 10 years at 4.5% AFR, amortizing monthly: $777/mo = $93,200 total, $18,200 interest. Interest is lender's taxable income (Schedule B); borrower may deduct as mortgage interest if secured by primary residence and properly recorded.

Critical compliance: (1) written promissory note, (2) rate ≥ AFR, (3) actual payments made, (4) lender reports interest income. Skip any of these and the IRS can treat the whole transaction as a gift, triggering gift-tax reporting at the original loan date.

Editorial noteMaintained by EveryCalc - Reviewed June 2026

EveryCalc calculators are designed for fast, practical estimates with transparent inputs and no required account. We use plain formulas, visible assumptions, and related tools so visitors can check the result from more than one angle.

Results are informational only. For financial, tax, legal, medical, construction, or other high-impact decisions, verify the output against primary sources or a qualified professional.

Learn more about our review process on the EveryCalc methodology page.

How this calculator works

What this page estimates

This Family Loan Calculator is built to give a quick, browser-based estimate for family loan. Loans between family members are perfectly legal but must be structured as real loans — written note, interest at or above the IRS Applicable Federal Rate (AFR), scheduled repayments — to avoid being treated as gifts. Too little interest and the IRS imputes interest income to the lender and re-characterizes principal as a gift. This calculator sizes a compliant family loan. The inputs stay on the page during normal use, and the result should be treated as an estimate for planning, comparison, or education rather than professional advice.

Calculation approach

The calculator applies the standard relationship implied by the inputs, then formats the answer so it can be checked and reused. For finance tools, the most important step is using consistent units, rates, time periods, and assumptions before comparing the result with another calculator or outside quote.

Example workflow

For example, start with a realistic value you already know, change one input at a time, and watch how the answer moves. That makes it easier to tell whether the result is being driven by the main amount, the rate, the time period, or a unit conversion.

Practical checks

Use current, real-world numbers when the result affects money, health, tax, or legal decisions.
Run a low, base, and high case when the inputs are estimates.
Check the related calculators below when the next decision depends on a different assumption.

How to interpret the family loan result

Best use

Use the result as a planning number for comparing payments, rates, returns, tax reserves, or cash-flow choices before you request a quote or make a commitment.

Cross-check

Compare the answer with the contract, lender estimate, tax form, brokerage statement, payroll record, or invoice that will control the real-world outcome.

Watch for

Do not rely on a single optimistic rate, return, or fee assumption. Money pages work best when you run low, base, and high cases and keep professional advice separate from the estimate.

This page belongs to the Finance calculator library, so the answer should be read in the context of the decision you are modeling rather than as a universal rule.

Before relying on this family loan estimate

Most calculator mistakes come from the inputs, not the arithmetic. Use this short audit before you reuse the answer in a spreadsheet, quote, application, or important conversation.

Confirm source numbers

Match balances, rates, fees, taxes, income, and payment dates against the lender quote, payroll record, tax form, statement, invoice, or contract.

Separate cash flow from total cost

A lower monthly payment can still cost more over time if fees, interest, taxes, or a longer term are hidden in the structure.

Run conservative cases

Test at least one higher-cost or lower-return case before using the output for a purchase, refinance, investment, loan, or tax decision.

Rerun this page when the rate, price, term, fee, tax rule, income, expense, or expected holding period changes.

How to Use

Enter loan amount, term, and the AFR rate for your loan term (short/mid/long).
Compare interest-only, amortizing, and balloon structures.
See monthly payment, total interest income to lender, and tax reporting requirements.

Frequently Asked Questions

What is AFR?

IRS-published Applicable Federal Rate — minimum interest rate on family loans to avoid imputed gift treatment. Three tiers: Short-term (≤3 years), Mid-term (3-9 years), Long-term (>9 years). Published monthly; charge at or above. In 2026 ranges roughly 4-5% depending on tier.

Does the lender pay tax on interest?

Yes. Interest received is regular income, reported on Schedule B. The borrower may or may not be able to deduct depending on use of proceeds (mortgage interest if secured by primary residence; business if used for business; typically not for personal use).

Can the loan be forgiven?

Yes, but forgiveness is a gift for that year. A $50K loan forgiven in year 3 is a $50K gift — minus whatever principal had been repaid. Subject to annual exclusion and lifetime exemption rules. Many families structure this intentionally: loan becomes gift gradually via annual forgiveness at the $19K exclusion level.

What about the de minimis exception?

Loans of $10,000 or less between individuals are exempt from imputed-interest rules if not used to buy income-producing property. Above $10K, AFR applies. For loans between $10K and $100K, imputed interest is limited to borrower's net investment income — a modest loophole but rarely used cleanly without a CPA.