METHOD & GUIDANCE
How this calculation works
Enter figures from the same period and on a consistent sales tax-inclusive or sales tax-exclusive basis. Tool IQ recalculates every output immediately; nothing you enter is saved or sent to us.
How to use the result
Compare offers using total repaid and fees as well as the monthly payment, and test whether repayments remain affordable in a slower-sales case.
Worked example
The opening example amortises a 25,000 fixed-rate loan over 36 monthly payments and adds the stated upfront fee to total borrowing cost.
Common mistakes
- Comparing only monthly payments across different terms.
- Leaving fees out of total cost.
- Using a fixed-rate estimate for a variable-rate facility.
Frequently asked questions
Is this calculator free?
Yes. It requires no account and stores no calculation inputs.
Can I use the answer for a formal filing?
No. It is a planning estimate, not accounting, tax, legal or investment advice. Confirm material decisions with a qualified professional.
Should I include sales tax?
Use a consistent basis throughout. Businesses that recover input tax commonly model net figures; consumer-facing prices are often considered gross.
Continue the decision
- ROI Calculator — Compare return, profit and payback at a glance.
- Cash Runway Calculator — Estimate how many months your available cash will last.
Method reviewed 26 July 2026. Figures are illustrative and calculated locally in your browser.