Bank savings interest calculator
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Enter the deposit amount, annual interest rate and term to instantly calculate the interest earned and total payout. Supports term deposits, demand deposits and interest on early withdrawal.
Formula & example
By day: Interest = Amount × interest rate(%/year) × number of days / 365. By month: Amount × interest rate ÷ 12 × number of months.
Example: deposit 100.000.000đ, 6%/year, 90 days → interest ≈ 100.000.000 × 6% × 90/365 ≈ 1.479.452đ, payout ≈ 101.479.452đ.
Frequently asked questions
What is the savings interest formula?
Interest = Amount × annual rate × number of days / 365 (or by month, divided by 12).
How is interest calculated on early withdrawal?
Calculated at the demand deposit rate (~0.1%/year) for the entire number of days deposited.
Which term should I choose?
Longer terms usually have higher interest rates but are less flexible; consider your need to use the funds.
Results are for reference only; actual interest depends on each bank's policy and the way days are counted.
