Understanding decreasing sum-insured
On a decreasing-balance loan, the amount the borrower owes falls every month. A credit-life policy whose covered amount stays fixed for the whole term would soon insure far more than the borrower actually owes — over-insuring the loan and over-charging for premium. A decreasing sum-insured solves this by stepping the cover down in line with the outstanding balance.
Cover that tracks the balance
The purpose of credit-life is to clear the loan if the borrower cannot. Since the outstanding balance shrinks as the loan amortises, the cover only ever needs to match what is still owed at any given point. A decreasing sum-insured does exactly that — it steps down automatically with the declining balance, so the policy covers the real exposure rather than a stale original figure.
Why fixed cover would be wrong
- It would insure more than the borrower owes for most of the loan's life.
- It would charge the borrower premium for cover they do not need.
- It would leave the policy and the loan describing two different amounts.
A worked example
| Point in loan | Outstanding balance | Sum-insured |
|---|---|---|
| At origination | TSh 5,000,000 | TSh 5,000,000 |
| After 12 months | TSh 3,200,000 | TSh 3,200,000 |
| Near the end of term | Low residual balance | Matches residual balance |
What the figures show is that the sum-insured is never a fixed number stamped on the policy — it moves with the amortising balance, so cover and exposure stay aligned throughout.
Because the assessor checks the current sum-insured when a claim is assessed, a decreasing policy pays out against what was genuinely owed at the time of the event — which is exactly the repayment that clears the loan.