Second Property Calculator
Find out if you can afford a second property in South Africa — check combined DTI, max affordable price, and buy-to-let rental offset
Existing Property
New Property
Your Finances
Your combined DTI of 44.19% exceeds the 30% threshold. Banks will likely decline. Consider a larger deposit, lower-priced property, or settling existing debts first.
Investment properties typically attract prime+1% (11.25%). Transfer duty applies in full -- no first-time buyer exemption on second properties.
Understanding Second Property Affordability How to use • Formula • Example
How to Use This Calculator
Enter your existing property value, outstanding bond balance, and current monthly payment under the "Existing Property" section. Then enter the purchase price of the second property you're considering, along with your deposit percentage (minimum 10% recommended), the interest rate (investment properties typically attract prime+1%, currently 11.25%), and your preferred bond term.
Under "Your Finances", enter your gross monthly income and any other monthly debts (car payments, credit cards, personal loans). The calculator determines whether banks will likely approve the second bond based on combined debt-to-income (DTI).
Switch to the Rental Offset tab if you're buying to let -- banks credit 75% of expected rental income when assessing affordability.
The DTI Formula Banks Use
South African banks use the debt-to-income (DTI) ratio to assess whether you can afford a second bond:
Where:
- All monthly debts = Existing bond payment + New bond payment + Car payments + Credit cards + Personal loans
- Gross monthly income = Total income before tax and deductions
- Maximum DTI = 30% (SA banking standard)
For buy-to-let properties, banks use 75% of expected rental income to offset the new bond payment:
Worked Example
Sipho earns R65,000 per month and owns a home in Midrand worth R1,800,000 with an outstanding bond of R1,200,000 (monthly payment R12,500). He wants to buy a second property in Pretoria for R1,400,000 as an investment.
With a 10% deposit (R140,000), his new bond would be R1,260,000 at prime+1% (11.25%) over 20 years, costing approximately R13,150/month.
His combined DTI: (R12,500 + R13,150 + R3,000 other debts) ÷ R65,000 = 44.1% -- well above the 30% limit. The bank would decline.
However, if Sipho can rent the property for R8,000/month, banks credit 75% = R6,000. His adjusted DTI drops to 34.8% -- still tight but closer to approval with a larger deposit.
Frequently Asked Questions
Can I get a second bond while still paying off my first?
Yes, South African banks will consider a second bond application, but they assess your total debt exposure. Your combined monthly commitments (both bonds plus all other debts) must not exceed 30% of your gross monthly income. Banks also look at your credit score, employment stability, and the equity in your existing property.
Having an existing bond reduces your affordability significantly. You'll typically need a deposit of at least 10% for a second property, and investment properties usually attract a higher interest rate of prime+1% (11.25%).
Do I pay more transfer duty on a second property?
The transfer duty rates are the same for all properties -- there is no surcharge for second properties. However, you cannot claim first-time buyer exemptions on a second purchase. Transfer duty is 0% on properties up to R1,210,000, then a sliding scale from 3% to 13%.
For a R1,400,000 second property, transfer duty would be approximately R5,700. On top of this, you'll pay conveyancing fees, bond registration fees, and the bank initiation fee.
What interest rate will I get on a second property bond?
Investment (buy-to-let) properties in South Africa typically attract a rate of prime+1% (currently 11.25%), compared to prime rate for primary residences. Some banks may charge prime+2% depending on the risk profile.
If the second property is for personal use (holiday home), you may qualify for prime rate, though banks are stricter with second-home applications.
How do banks assess rental income for buy-to-let affordability?
South African banks typically credit only 75% of expected rental income when assessing your affordability for a buy-to-let property. The 25% discount accounts for potential vacancies, maintenance costs, and management fees.
You'll need to provide evidence of realistic rental estimates -- a letter from an estate agent or comparable rental listings in the area. Remember that rental income is taxable and must be declared to SARS. You can deduct bond interest, rates, insurance, and maintenance as expenses.
Can I use equity in my existing home as a deposit for a second property?
Yes, if you have an access bond, you can draw from the available facility (original bond amount minus current balance) and use that as a deposit on a second property. This is one of the most common strategies for property investors in South Africa.
However, drawing from your access bond increases your overall debt, so it may negatively affect your DTI ratio. Consider using our Access Bond Calculator and Home Equity Calculator to understand your position before applying.