Australian Family Loan Calculator

Work out a clear repayment plan for money lent between family or friends — in Australian dollars, with no sign-up required.

Compare repayments, interest and timing before you agree

Enter the amount, annual interest rate, term and repayment frequency to estimate each repayment, total interest, total repaid and the expected finish date — all in Australian dollars.

Model an interest-free loan at 0% or enter the rate you have agreed. Compare weekly, fortnightly and monthly repayments without creating an account.

Free to calculate · No sign-up required · AUD results · Weekly, fortnightly or monthly

Free family loan calculator for Australia: work out repayments, total interest and an amortisation schedule for Bank of Mum & Dad loans — with guidance on ATO assessable income and Age Pension gifting rules — then create a signed loan agreement with Chipkie.

Plan the repayments before money changes hands

A useful family loan plan answers more than “How much will I pay?” It should show both people the cost, timing and trade-offs before they agree.

Calculate in Australian dollars

Enter the principal, annual interest rate and term. Use 0% to model an interest-free arrangement or enter a custom rate to see how interest changes the result.

Match the family budget

Switch between weekly, fortnightly and monthly repayments. The calculator reworks the schedule at the selected frequency rather than simply dividing a monthly figure.

See the complete cost

Review the estimated repayment amount, number of payments, total interest, total repaid and expected debt-free date in one place.

Understand the balance over time

Use the balance and principal-versus-interest charts to see how each repayment reduces the outstanding loan.

Test alternatives before agreeing

Pin up to three scenarios to compare different amounts, rates, terms or repayment frequencies. Use the extra-repayment control to estimate how paying more could shorten the loan and reduce interest.

Keep a practical record

Open the full payment schedule and download it as a CSV. When the family is ready, carry the chosen amount, rate, term and frequency into Chipkie loan setup.

About bank-rate comparisons: any comparison is illustrative. Check the source and review date shown beside the rate; the comparison should not appear when its source is unavailable or stale.

How to use the Australian family loan calculator

  1. Enter the loan amount.Use the amount the borrower is expected to repay, excluding any interest that has not yet accrued.
  2. Choose the annual interest rate.Enter 0 for an interest-free scenario or the annual rate the family is considering.
  3. Set the term.Enter how many months the loan will run. The 1-, 2-, 3- and 5-year shortcuts are available for common scenarios.
  4. Choose a repayment rhythm.Select weekly, fortnightly or monthly and set the first payment-period start date.
  5. Review the whole result.Check the repayment amount, total interest, total repaid, finish date and full schedule, not just the headline repayment.
  6. Compare before committing.Try a longer or shorter term, a different rate or an extra amount per repayment. Make sure the plan is realistic for the borrower and does not put the lender’s own financial security at risk.
  7. Record what you agree.Download the schedule, then put the agreed amount, rate, timing and responsibilities in writing.

Example: a $30,000 family loan repaid fortnightly

Suppose a family agrees on an AUD $30,000 loan at 4.5% per year, repaid fortnightly over 36 months, with the first payment period starting 14 August 2026.

The calculator estimates:

$411.40per fortnight
78repayments
$2,089.20total interest
$32,089.20total repaid

Expected final repayment: 10 August 2029.

This example is illustrative. Changing the start date, rate, term or frequency changes the result. Small rounding adjustments may appear in the payment schedule so that the principal is repaid exactly.

How to read the calculator results

  • The calculator uses a reducing-balance repayment method. Interest is calculated on the outstanding balance, so the interest portion generally falls as principal is repaid.
  • The selected start date and frequency determine the number and timing of scheduled repayments. A 36-month loan can therefore have a different number of weekly, fortnightly or monthly payments.
  • Results are estimates based on the information entered. They are not a credit quote, product comparison, valuation, repayment demand or guarantee that either party can afford the arrangement.
  • A displayed bank-rate comparison is illustrative only and should always carry its source and review date. It does not include every fee, feature or eligibility condition of a commercial loan.
  • The calculator does not assess enforceability, security over property, responsible-lending obligations, family-law outcomes, estate treatment, tax liability, Division 7A compliance or eligibility for a government payment.
  • Chipkie provides general information and planning tools, not personal legal, tax, credit or financial advice. Check current ATO, ASIC Moneysmart and Services Australia guidance and obtain professional advice where appropriate.

What Australian families should consider before lending

Personal money is different from company money

This calculator is designed for an ordinary private arrangement between family members or friends. It is not the ATO’s Division 7A calculator.

Australia does not have a single ATO benchmark interest rate that applies to every ordinary person-to-person family loan. Special rules can apply when a private company lends to a shareholder or an associate. Division 7A complying loans can require a written agreement, a benchmark interest rate, a maximum term and minimum yearly repayments. If a company or trust is involved, get advice before relying on this calculator.

Interest can have tax consequences

If a lender receives interest, it will generally need to be considered when preparing the lender’s tax return. Whether a borrower can claim an interest deduction depends on the use of the borrowed money and the borrower’s circumstances; interest connected only with a private or domestic purpose is generally not deductible.

The calculator separates principal and interest to help both people understand the schedule, but it does not decide how an amount should be treated for tax.

A loan can affect the Age Pension

For the Age Pension assets test, debts owed to you can be included among your assets. Services Australia also applies deeming rules to financial assets. A gift is assessed differently: amounts above the gifting free areas may continue to affect income and assets tests, and forgiving a family loan may be treated as gifting.

Current Services Australia guidance says the gifting free areas are $10,000 in one financial year and $30,000 over five financial years, with no more than $10,000 counted in any single financial year. These figures can change and do not mean a loan is ignored below those amounts.

Put the arrangement in writing

Moneysmart recommends deciding whether the support is a gift or a loan and, for a loan, recording how much will be repaid and when. A clear written agreement can also record the interest rate (including 0%), payment frequency, start date, what happens if circumstances change and how variations will be approved.

Written terms do not guarantee repayment or settle every legal, tax, Centrelink, estate or family-law question. For a large, secured, company-funded or otherwise complex arrangement, obtain independent legal, tax or financial advice.

Australian guidance used for this page

Use the official guidance below to check the rules that apply to your circumstances.

Australian guidance checked against ATO, ASIC Moneysmart and Services Australia sources. Last reviewed 14 August 2026. Rules and thresholds can change; verify the current guidance before relying on it.

Australian family loan calculator FAQs

Clear answers about repayments, interest, tax context and recording a loan between family or friends in Australia.

What does this family loan calculator show?

It estimates the repayment for an Australian family or friend loan using the amount, annual interest rate, term, repayment frequency and start date you enter. It also shows the estimated number of payments, total interest, total repaid, finish date, balance charts and a full repayment schedule.

How are family loan repayments calculated?

The calculator uses a reducing-balance method. Each scheduled payment first covers interest on the outstanding balance and the rest reduces the principal. It recalculates for weekly, fortnightly or monthly repayments so the selected frequency is reflected in the schedule.

Can I calculate an interest-free family loan?

Yes. Enter an annual interest rate of 0% to model an interest-free loan. The result will divide the principal across the scheduled repayments with no interest added. An interest-free estimate is not a decision about tax, Centrelink or enforceability, so check any rules relevant to your circumstances.

Is there a minimum interest rate for a family loan in Australia?

There is no single ATO benchmark rate that applies to every ordinary private loan between individuals. Do not apply that answer universally: a loan involving a private company, shareholder or associate may fall under Division 7A, which has its own benchmark-rate and repayment requirements. Employer, trust, business and cross-border arrangements can also need specialist advice.

Is this a Division 7A loan calculator?

No. This tool estimates ordinary reducing-balance family-loan repayments. The ATO’s Division 7A calculator uses different inputs and rules to work out minimum yearly repayments and interest for qualifying private-company loans. Use the ATO tool and obtain tax advice if company money is involved.

Does the lender have to declare interest received?

Interest received by an Australian resident is generally income that must be considered in the lender’s tax return. The correct timing and treatment depend on the arrangement and the lender’s circumstances. Keep the agreement and payment records and ask a registered tax agent if you are unsure.

Can the borrower claim a tax deduction for the interest?

Not simply because interest is charged. Deductibility depends on how the borrowed money is used and whether the expense has the required connection with earning assessable income. Interest connected with private or domestic spending is generally not deductible. Get tax advice for investment, business or mixed-purpose use.

Can a family loan affect the lender’s Age Pension?

Yes. Services Australia says debts owed to you can form part of the Age Pension assets test, and financial assets can be subject to deeming. The effect depends on the person’s full income, assets and circumstances. Tell Services Australia about relevant changes and check its current rules.

Is a family loan the same as a gift?

No. A gift is not intended to be repaid; a loan creates an obligation to repay. For Services Australia purposes, gifts above the gifting free areas can continue to affect income and assets tests, while a loan can remain an asset of the lender. Forgiving an existing loan may also be treated as gifting. Record the parties’ real intention and follow the agreed repayment plan.

Should a family loan be put in writing?

Yes, particularly where the amount or term is significant. Record the parties, principal, interest rate or 0% rate, repayment frequency, start date, term, variation process and what happens if a repayment is missed. Moneysmart recommends putting a loan in writing, including how much will be repaid and when.

Which repayment frequency should we choose?

Choose a frequency both parties can realistically follow. Weekly or fortnightly may align with wages, while monthly may be easier to administer. Compare the schedules rather than assuming one frequency is automatically better; changing frequency changes the timing and can change the total interest estimate.

Can I turn the calculation into a Chipkie loan?

Yes. The calculator’s “Create this loan with Chipkie” button carries the amount, rate, term and repayment frequency into loan setup. Review every detail with the other party before confirming it. You can then use Chipkie to record the arrangement and choose any optional agreement or payment features that suit you.

Ready to turn the estimate into a shared plan?

When both people are comfortable with the amount, rate, term and repayment frequency, return to the result and select Create this loan with Chipkie. That calculator action carries the scenario into loan setup so you can review it together before confirming anything.

See how Chipkie works · Compare features and pricing · Read Australian FAQs · Contact Chipkie

High five for Chipkie!