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Bond repayment calculator · intelligentprop.com/tools/bond-calculator
Bond repayment calculator
At today's prime rate of 10.75%, every R1 million borrowed over 20 years costs R10,152 a month. Set your own price, deposit, rate and term below.
R
10%
10.75% (prime)
20 years
Prime is 10.75% as of 25 September 2026. Your bank sets your actual rate, often above or below prime.
Monthly repayment
R77,665
Loan amount
R7.65m
Total interest
R11m
Income usually needed
R259k
Gross a month, at 30% of income
41% capital59% interest
Year-by-year schedule
| Year | Interest | Capital | Balance |
|---|---|---|---|
| 1 | R816,810 | R115,170 | R7,534,830 |
| 2 | R803,801 | R128,179 | R7,406,650 |
| 3 | R789,322 | R142,658 | R7,263,992 |
| 4 | R773,207 | R158,773 | R7,105,219 |
| 5 | R755,273 | R176,707 | R6,928,512 |
| 6 | R735,312 | R196,668 | R6,731,844 |
| 7 | R713,097 | R218,883 | R6,512,961 |
| 8 | R688,372 | R243,608 | R6,269,353 |
| 9 | R660,855 | R271,125 | R5,998,228 |
| 10 | R630,229 | R301,751 | R5,696,477 |
| 11 | R596,144 | R335,836 | R5,360,641 |
| 12 | R558,209 | R373,772 | R4,986,869 |
| 13 | R515,988 | R415,992 | R4,570,877 |
| 14 | R468,999 | R462,982 | R4,107,896 |
| 15 | R416,701 | R515,279 | R3,592,616 |
| 16 | R358,496 | R573,484 | R3,019,132 |
| 17 | R293,717 | R638,264 | R2,380,869 |
| 18 | R221,620 | R710,361 | R1,670,508 |
| 19 | R141,379 | R790,602 | R879,906 |
| 20 | R52,074 | R879,906 | R0 |
Know your budget? We will show you the homes worth seeing at that price.
Start a private searchHow it is calculated
South African home loans compound monthly. The repayment is P × r ÷ (1 − (1 + r)⁻ⁿ), where P is the amount borrowed, r is the annual rate divided by 12, and n is the number of months.
For example, R1,000,000 over 20 years at 10.75% is R10,152 a month, or R2,436,549 in total.
The affordability view works backwards. Banks' own calculators cap the repayment at about 30% of gross monthly income, so we take 30% of your income, subtract your other debt repayments, and find the largest bond that repayment carries.
Questions people ask
What is the prime lending rate in South Africa today?
10.75%, from 25 September 2026, after the Reserve Bank raised its policy rate to 7.25%. Prime sits 3.5 percentage points above the policy rate. The next rate decision is on 19 November 2026.
How much bond can I afford on my salary?
Banks' calculators cap the bond repayment at about 30% of your gross monthly income, and then check your full expenses and credit record. On a gross income of R100,000 a month that is a repayment of up to R30,000, which carries a bond of about R2,954,998 over 20 years at prime.
Will my bank charge me prime?
Not necessarily. Banks price each loan above or below prime depending on your deposit, income and credit record, so set the rate slider to the rate you are offered.
Should I take a 20 or 30 year bond?
A longer term lowers the monthly repayment but adds a great deal of interest. Compare both in the calculator: the year-by-year schedule shows exactly how much of each year goes to interest.
Sources
- South African Reserve Bank: Monetary Policy Statement, September 2026Checked 3 October 2026
- South African Reserve Bank: Current market ratesChecked 3 October 2026
- Standard Bank: Home loan calculatorsChecked 3 October 2026
- ooba: Bond calculatorChecked 3 October 2026
Results are estimates to help you plan. They are not financial, tax or legal advice.