Worked example: Mortgage Calculator UK
Zero-rate housing costs. This fixed reference example shows one complete scenario; the interactive results above use your current inputs.
View the example inputs
- Loan amount
- 120000 $
- Annual interest rate
- 0 %
- Term
- 10 years
- Extra monthly payment
- 0 $
- Annual property tax
- 1200 $
- Annual homeowners insurance
- 1200 $
- Monthly HOA fees
- 50 $
| Calculated quantity | Example result |
|---|---|
| Scheduled monthly payment | $1,000.00 |
| Monthly housing cost (before extra payment) | $1,250.00 |
| Payments until payoff | 120 months |
| Total principal and interest | $120,000.00 |
| Total interest | $0.00 |
Understanding payments, principal and borrowing cost
Compare the payment and the total cost
An installment payment depends on the amount borrowed, the periodic interest rate and the repayment term. A longer term can make each installment smaller while increasing the number of interest charges. Compare the total paid and the payoff horizon as well as the advertised monthly amount.
Keep the loan’s note interest rate separate from fees and APR unless the calculator specifically asks for APR. Financed fees increase the balance; upfront fees reduce cash received. A zero-interest loan still requires repayment of principal. Check whether the quoted rate is fixed and whether the repayment frequency matches the calculation.
Use a schedule to check what changes
A loan schedule allocates each payment between interest and principal, then reports the remaining balance. Extra principal can reduce later interest without reducing the scheduled installment. A new or recast loan can change the installment itself.
Schedules here retain calculation precision and round displayed cells. Their CSV exports let you inspect the full sequence. If a lender uses different posting dates, daily interest, fees or rounding, its statement can differ from this modeled schedule.
Formula and calculation method
Fixed-rate monthly amortization; annual nominal rate divided by 12. Monthly housing total adds tax/12, insurance/12 and HOA.
Taxes, insurance and fees are entered by you; amounts use one chosen currency. The UK page uses monthly approximation and does not reproduce lender daily-interest conventions or mortgage-product eligibility.
Reference Sources
Frequently asked questions
How does this calculator work?
Fixed-rate monthly amortization; annual nominal rate divided by 12. Monthly housing total adds tax/12, insurance/12 and HOA.
What assumptions should I check?
Taxes, insurance and fees are entered by you; amounts use one chosen currency. The UK page uses monthly approximation and does not reproduce lender daily-interest conventions or mortgage-product eligibility.
Can I save or print this calculation?
Use Copy link with inputs to reproduce the scenario, Download results for a text record, or Print. Where a schedule is shown, its CSV download includes every row.