Free personal finance calculators
Run the numbers on budgets, debt, housing, investing and retirement, then track the plan in FinWise if you want.
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11 calculators
The Fair Split Calculator
How should we split rent between two incomes?
Can I actually afford this?
Can I actually afford this purchase?
Can I afford this car?
Does the instalment, insurance, and fuel fit my take-home?
Should I invest or pay off my bond?
Should I invest or pay off my bond?
When will I become a millionaire?
When will I become a millionaire?
Interest rate hike impact
What does a rate hike cost me each month?
Debt payoff calculator
How fast can I pay off my debt?
Retirement calculator
Am I saving enough for retirement?
Guides to go with them.
Plain-language reading on the decisions behind these numbers. See the blog.
Budgeting · October 7, 2026
How to split money fairly as a couple
A 50/50 rent split feels equal until the incomes are not. See a South African example in rands, what each person has left, and a free calculator you can send to your partner.
Budgeting · October 5, 2026
Can I actually afford this?
The price on the tag is not the cost of saying yes. See a South African example in rands, why a repayment that fits can still be expensive, and a free calculator for your own quote.
Investing · September 30, 2026
How Long Does It Take to Save R1 Million in South Africa?
Your first R1 million is less about a huge salary and more about what you invest and how long it compounds. See illustrative timelines in rands, March 2026 TFSA limits, and a free calculator.
