This Ghana personal loan calculator models a reducing-balance loan the way Ghanaian banks and NBFIs structure them. Bank personal loans commonly carry 25–40% p.a., NBFIs 30–50%, so the rate you enter drives the monthly instalment, total interest and the amortisation schedule.
How it works
The monthly repayment uses the amortising annuity formula on a reducing balance:
M = P × r / (1 − (1 + r)^−n)
where P is the loan, r is the monthly rate (annual ÷ 12) and n is the number of months. Each month the interest is balance × r, the rest of the instalment reduces the principal, and the balance falls until it reaches zero.
- Total interest:
monthly × months − loan. - Schedule: every row shows the interest paid, principal repaid and remaining balance.
Example
A GHS 20,000 loan at 30% p.a. over 24 months gives a monthly rate of 2.5%. The annuity formula returns the fixed instalment; early instalments are mostly interest, later ones mostly principal, and the calculator totals the interest you pay across the term.
Notes
This assumes reducing-balance interest. If your lender quotes a flat rate, the true cost is higher — ask for the APR. Arrangement fees, insurance and processing charges are not included. This is an estimate, not a loan offer.