Fixed Deposit (FD) & T-Bill Calculator 2026
Rates reviewed
23 August 2026
Deposit Amount (LKR)
Interest Rate (% p.a.)
Tenure (Months)
Interest Payout Method
At Maturity
Monthly
Deduct 10% WHT
Applies to most SL fixed deposits
Final Value at Maturity
Rs. 1,112,500
Gross Interest Earned:
Rs. 125,000
Withholding Tax (10%):
- Rs. 12,500
Net Interest (After Tax):
Rs. 112,500