Set your inputs and units
Enter amounts in THB and choose a period and rate basis that match the scenario you want to model.
Deposit interest
Estimate deposit interest using calendar dates and credit events, with explicit withholding assumptions.
Calculation result
Adjust the example inputs, then calculate to see your result.
Interest accrues for actual days, rounds to two decimals on each credit date, then scenario withholding rounds separately, half up. Only net interest is reinvested when selected. No tiered rates, transactions or bank-specific rules.
How to use this calculator
Check the assumptions
Review contribution timing, day-count basis or reserve duration. Financial products do not all use the same rules.
Calculate and compare
Read the result and table, then change inputs to compare. Copy the result or reset without leaving this page.
A worked example
Illustrative calculation
100,000 THB at 1% from 1 January 2025 to 1 January 2026 on Actual/365 earns 1,000 THB before withholding.
Compare a second scenario
Copy your first result, then change only the amount or duration to see how that assumption changes the outcome.
Common questions
Where does my information go?
Calculations run in your browser. Financial inputs are neither saved locally nor sent to analytics. Reloading restores the initial values.
Does this match a bank statement or guarantee a return?
This is an estimate under your assumptions, not a guaranteed return. Actual payment dates, fees, taxes and contractual rounding can change the result.