Mortgage Calculator South Africa 2026
Calculate your monthly South African home loan repayment including transfer duty and full cost breakdown. Updated for 2026 bond rates and transfer duty brackets.
How to Use the Mortgage Calculator
Enter the home price (the purchase price of the property), down payment (your deposit — 10% is standard), annual interest rate (prime rate is 11.25% in March 2026), and loan term (20 years is most common in SA). The calculator instantly shows your monthly bond repayment, total interest, and transfer duty.
The Extended Calculator below has three tabs: Monthly Payment with a cost breakdown chart, Affordability (calculate maximum home price from your income), and Refinance (compare old vs new rate). The Professional Calculator adds full cost of ownership with rates and levies, a rate stress test, and a year-by-year equity buildup table.
Bond Repayment Formula
Worked Example — R1.8m Home at Prime
Home price: R1,800,000 | Deposit: R180,000 | Rate: 11.25% | Term: 20 years
Loan amount: R1,800,000 − R180,000 = R1,620,000
Monthly rate: 11.25% ÷ 12 = 0.9375%
Monthly payment: R1,620,000 × [0.009375 × (1.009375)^240] / [(1.009375)^240 − 1] = R16,898
Total paid: R16,898 × 240 = R4,055,520
Total interest: R4,055,520 − R1,620,000 = R2,435,520
Transfer duty: 3% × (R1,512,500 − R1,100,000) + 6% × (R1,800,000 − R1,512,500) = R12,375 + R17,250 = R29,625
Conveyancing fees (est.): ~R13,700
Total upfront costs (incl. deposit): R180,000 + R29,625 + R13,700 ≈ R223,325
SA Home Loan Rates 2026
| Borrower Profile | Rate | Monthly (R1.62m, 20yr) |
|---|---|---|
| Excellent credit (prime −0.5%) | 10.75% | R16,350 |
| Standard (prime) | 11.25% | R16,898 |
| Average risk (prime +1%) | 12.25% | R17,981 |
| Higher risk (prime +2%) | 13.25% | R19,090 |
Rates negotiated based on credit score, LTV ratio, and income stability. Using a bond originator (ooba, BetterBond) is free and often secures better rates.
| Scenario | Monthly Bond | Total Monthly | Total Interest | Transfer Duty | Conveyancing | 30yr Total Cost |
|---|---|---|---|---|---|---|
| Base Scenario | R 16 998 | R 21 598 | R 2 459 507 | R 29 625 | R 13 700 | R 5 418 477 |
| 30yr Term | R 15 734 | R 20 334 | R 4 044 396 | R 29 625 | R 13 700 | R 7 555 366 |
| Bigger Deposit | R 14 864 | R 19 464 | R 2 127 243 | R 29 625 | R 13 700 | R 5 086 213 |
| Scenario | Rate | Monthly Payment | Increase vs Base |
|---|---|---|---|
| Current Rate | 11.25% | R 16 998 | — |
| +1% rate hike | 12.25% | R 18 121 | +R 1 123/mo |
| +2% rate hike | 13.25% | R 19 269 | +R 2 271/mo |
| +3% rate hike | 14.25% | R 20 440 | +R 3 442/mo |
| +4% rate hike | 15.25% | R 21 632 | +R 4 634/mo |
| Year | Bond Balance | Property Value | Equity | Equity % |
|---|---|---|---|---|
| Year 1 | R 1 597 119 | R 1 908 000 | R 310 881 | 16.3% |
| Year 5 | R 1 475 075 | R 2 408 806 | R 933 731 | 38.8% |
| Year 10 | R 1 221 389 | R 3 223 526 | R 2 002 136 | 62.1% |
| Year 15 | R 777 322 | R 4 313 805 | R 3 536 482 | 82.0% |
| Year 20 | R 0 | R 5 772 844 | R 5 772 844 | 100.0% |
SA residential property has averaged ~6–8% p.a. appreciation long-term (FNB Property Barometer). Actual returns vary significantly by area, property type, and market conditions.