Example 1 — One year, typical cost
- Amount: 10,000
- Cost: 1,200
- Term: 12 mo.
APR 12.00%
Cost/principal 12.00%
With a 12-month term, simplified APR matches the cost-to-principal ratio.
APR (simplified)
Estimate a simplified APR / effective borrowing cost from total cost or from fee components (upfront, monthly fees, insurance). Educational model — not statutory APRC.
Educational estimate, not statutory APR/APRC. Formula: (1 + cost/principal)^(12/months) − 1. Not an IRR solver or a lender disclosure. Fee components under Additional options build total cost automatically. Amounts follow the header currency.
Result
Enter data and click Calculate.
How results are calculated
Simplified APR estimate = (1 + cost ÷ principal)^(12 ÷ months) − 1.
Total cost — typed manually, or = interest + upfront + (monthly fee × months) + insurance.
Monthly all-in = (principal + cost) ÷ months. Cost/principal = cost ÷ principal.
With a nominal rate we show estimate − nominal (not official APRC).
How to use the calculator
- Enter the loan amount and term in months.
- Enter total known borrowing cost — or open Additional options and build it from components (interest, upfront, monthly fee, insurance).
- Optionally enter a nominal rate to see the gap versus the estimate.
- Read the APR estimate, total cost, monthly all-in, and a short note on what raises the cost.
Usage examples
Example 2 — Two years + nominal
- Amount: 20,000
- Cost: 3,500
- 24 mo., nominal 8%
Estimate ≈ 8.40%
Close to nominal
When cost is mostly interest, the estimate often sits near the nominal rate.
Example 3 — Hidden-cost style fees
- 15,000, 24 mo., nominal 9%
- Interest 1,800 + upfront 600
- Fee 25/mo. + insurance 300
Total cost 3,300
Estimate above 9%
Upfront fees, monthly charges, and insurance push effective cost above the nominal rate alone.
When NOT to use this calculator
- It does not calculate statutory APR/APRC from bank documents.
- It does not help you choose a precise monthly instalment – use instalment or mortgage calculators instead.
- It does not show a full fee structure, only a simplified annual cost based on what you enter.
If you want to calculate:
- your instalment and total repayment → use Loan instalment or Mortgage instalment,
- full all-in cost including fees → use Total cost of loan.
FAQ
What does simplified APR/APRC mean here?
An approximate annualised cost measure including interest and selected fees — not every country’s full statutory APRC definition.
When use APR instead of the nominal rate alone?
When offers differ in fees — APR/APRC helps compare loan “price” in one percentage figure.
What limit does the simplified model have?
It may omit some costs or simplify the schedule. A lender’s official APRC may use a different method.
What mistake understates APR?
Leaving out arrangement fees and mandatory insurance in the cost fields, or treating them as irrelevant to the term.
Where does currency in the results come from?
Amounts follow the currency selected in the page header. Changing it reformats displayed values.
Which related tools help next?
Total cost of loan (all-in with fees), loan instalment, amortization schedule, loan margin, and DTI — to compare an offer beyond the APR estimate alone.
How is this different from statutory APRC?
This is an educational estimate: (1 + cost/principal)^(12/months) − 1. Official APRC may use different assumptions and a full payment schedule.
When should you not use this calculator?
When you need the lender’s official APRC from the offer, or you have a complex fee/payment schedule — rely on the disclosure document instead.