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Updated year criteria 2026
Investment Growth Calculator
The Investment Growth Calculator estimates a date and calendar estimate for your scenario from the quantities, rates, period, units and other assumptions requested on the page. Replace the example values with your own investment growth figures and recalculate after changing an assumption. Use it to compare scenarios, then verify any current rate or fee before acting.
Calculate the future value of your investment portfolio from the capital, monthly investment and average annual return.
Calculation results
Last port value
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Return on investment.
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Total investment.
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Total returns.
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Annual target (click to view)
Year
Accumulated investment.
Cumulative profit.
Port Value
Long-term investment planning.
Long-term investments with regularity are the key to financial freedom. This calculator helps you see the future of your investment portfolio clearly.
Example of planning.
Capital 200,000 baht Investment per month 10,000 baht Average return 8% per year for the duration of 20 years:
Total investment: 200,000 + (10,000 × 240) = 2,600,000 baht
Last port value: approx. 6,500,000 baht
Return on investment: approx. 3,900,000 baht
Why start investing so early?
The power of interest multiplies over time. Starting earlier than 10 years can make a difference in portfolio value of 2-3 times.
Frequently asked questions
What is the average return on investment in Thai stocks in 2026?
The average long-term return of the Thai Stock Market (SET) is approximately 8-12% per year including dividends depending on the time period measured. Debt securities combined funds are approximately 2-4%, mixed funds are approximately 5-8% and equity funds are approximately 7-12% per year long-term.
How is a monthly investment better than a one-time investment?
Monthly investments (DCA) reduce the risk of market timing mistakes because buying at both high and low prices lowers the average cost. One-time investment at low prices is better in the long run, but requires market assessment skills.
What funds should I invest in for the period 10-20 years?
For the long term 10-20 years, equity funds are a good choice because of the high return potential. SSF/RMF funds have additional tax deductions. Index funds have low fees and returns close to market.
How does inflation affect returns on investment?
You have to subtract inflation from the return to see the real purchasing power. For example, the return is 8% subtract inflation 3% the real return is 5%. You should always invest in assets that yield higher than inflation.
Check before using results
Summary before deciding
This calculation result is suitable for preliminary planning. Actual figures should be checked from documents or official sources before making important decisions.
The calculation is based on the information you enter on this page.
Special cases may require additional information.
It is recommended to record or compare the results with the related tools below.
Disclaimer: Calculations are estimates only. Actual returns depend on market conditions and are not guaranteed. They are not investment advice.
English calculator guide
How to use the Investment Growth Calculator
Use this page to test a specific investment growth scenario. Enter your own values in the calculator above, review the units beside each field, and recalculate after changing an assumption. The result updates the investment growth estimate instead of relying on a generic example.
Build a baseline investment growth case with figures that match your situation.
Run a second investment growth case after changing the rate, period, quantity or other key assumption.
Record the difference between the two investment growth results and the input responsible for it.
Inputs for the investment growth estimate
For this investment growth calculation, check the quantities, rates, period, units and other assumptions requested on the page. The result is designed to show a date and calendar estimate for your scenario, not a guaranteed provider price or official decision.
How the investment growth result is calculated
The calculator compares the selected dates using calendar-based intervals and the date rules shown on the page. Reusing the same investment growth inputs will produce the same estimate, which makes the page suitable for controlled scenario comparisons.
Checks for a investment growth decision
Confirm any current rate, threshold or provider rule that could change the final amount. For investment growth, Use the result as a planning estimate and confirm any rate, rule or threshold that may have changed before acting. Check the important inputs and any current provider or authority rules before using the result for a decision.
Language QA
Terminology, numeric values and calculator controls checked
Review formula structure, test cases, data sources, effective dates, and risk language accordingly.How to check our · There is no claim that an outside professional reviewed it. Unless the page directly states the name and qualifications. This content is therefore not individual advice.
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