Set your inputs and units
Enter amounts in THB and choose a period and rate basis that match the scenario you want to model.
Return on investment
Calculate project return from initial investment, receipts and operating costs, separating cash profit and time costs.
Scenario result
Enter your assumptions and calculate the scenario.
Calculations retain decimal precision and display two decimals; rounded rows can differ slightly from totals. This model does not guarantee profit, a probability of success, or lifetime funding.
Simple payback divides investment by constant net cash flow. It is not IRR; ROI is not automatically annualized.
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
Investing 10,000 THB with receipts of 15,000 THB and costs of 2,000 THB gives 3,000 THB profit and 30% ROI.
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.