Free finance tool · Philippines

Compound interest calculator

See how a starting amount and monthly contributions could grow in Philippine pesos. Change the return to compare your own scenarios.

01 / Your plan

Enter your numbers

Use pesos for both amounts. Change a field to update the estimate.

This model compounds monthly and adds each contribution at the end of the month.

02 / Estimate

Your projected total

₱957,184

After 20 years at 6% a year

You put in₱490,000
Estimated growth₱467,184
Your money Growth
See year-by-year amounts
Projected year-end balance in Philippine pesos
YearYou put inProjected total
1₱34,000₱35,288
2₱58,000₱62,136
3₱82,000₱90,639
4₱106,000₱120,901
5₱130,000₱153,029
6₱154,000₱187,138
7₱178,000₱223,352
8₱202,000₱261,799
9₱226,000₱302,617
10₱250,000₱345,953
11₱274,000₱391,961
12₱298,000₱440,808
13₱322,000₱492,667
14₱346,000₱547,725
15₱370,000₱606,178
16₱394,000₱668,237
17₱418,000₱734,124
18₱442,000₱804,074
19₱466,000₱878,339
20₱490,000₱957,184

How the estimate works

The calculator multiplies your balance by one month of the estimated return, then adds your monthly contribution. It repeats those steps for each month in your plan. Your “You put in” amount includes the starting amount and every monthly contribution.

For example, ₱10,000 up front and ₱2,000 at the end of each month means you contribute ₱490,000 over 20 years. The result above shows how that total changes if you assume a constant 6% annual return, compounded monthly.

You can enter a negative return to see a loss scenario. This estimate assumes the same return each month. Real markets move up and down, so the result is an illustration, not a forecast or a promise.

Questions about the calculator

How do I calculate compound interest with monthly contributions?

Enter your starting amount, the pesos you plan to add each month, how many years you will invest, and an estimated annual return. The calculator applies one-twelfth of that return each month, then adds your monthly contribution. It repeats that process for the number of years you choose.

Does this calculator work for investments in the Philippines?

Yes. Enter Philippine peso amounts to see a peso-denominated illustration. The calculator does not predict returns from any specific Philippine fund, stock, or savings product. It does not include fees, taxes, inflation, or exchange-rate changes.

Can I use this estimate for US stocks through Gotrade?

You can use it to test a scenario, but US stocks trade in US dollars. Your actual peso result will depend on investment performance, the PHP–USD exchange rate, fees, and taxes. Stock returns change over time and can be negative.

This tool is for education. It does not include fees, taxes, inflation, or currency conversion. US stocks trade in dollars; your peso result can change with the PHP–USD exchange rate. This page does not provide personal investment advice.

Calculator inputs follow the core fields in the Investor.gov compound interest calculator. See my finance videos.