Set the inputs
Enter the savings target, existing savings and months remaining. The target is not the monthly contribution.
Savings goal
Find the monthly contribution needed for a savings target and compare it with a zero-return scenario.
Calculation result
Adjust the example inputs, then calculate to see your result.
The chosen annual rate is converted to equivalent monthly growth. Constant rate; no tax, fees or inflation. Calculations retain precision before display rounding to two decimals, half up, so displayed rows may differ slightly from totals. Goal contributions round up to cents. Returns are not guaranteed.
How to use this calculator
Check the terms
Choose an assumed rate and contribution timing. Check a zero-return baseline before relying on growth.
Read the result
Read the monthly saving and final balance. Rounding the contribution upward to satang funds the modeled target.
A worked example
Illustrative calculation
Starting from zero, a 12,000 THB target in 12 months at 0% requires 1,000 THB each month.
Compare a second scenario
For a 12,000 THB target in 12 months at 0%, starting with 6,000 THB requires 500 THB monthly instead of 1,000 THB from zero.
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.
What are this model’s limitations?
The required contribution is not an affordability assessment, and an assumed return does not guarantee reaching the target.