MayKwentaPH
PHILIPPINESSAVINGS TOOL · 2026

Compound Interest
Calculator

watch a deposit grow on its own

See how a savings deposit or bank time deposit grows with compound interest. Enter your deposit, the annual rate, and how long it stays in. You can add a monthly top-up and the 20 percent interest tax. Everything runs on your device.

The amount you put in at the start. Add a monthly top-up in the options below if you plan to keep saving.

The quoted yearly rate.

Fractions are fine, like 0.5.

Banks deduct a 20 percent final tax on time deposit interest. Deposits held five years or more are exempt.

Ready when you are

Enter your deposit, rate, and years on the left, and your maturity value will appear here.

See how it’s calculated

A small ad helps keep this calculator free. Thank you for your patience.

How the growth is built

Four things decide how much a deposit becomes. Here is each one, and how it adds up.

Opening deposit

The amount you put in at the start. This is the principal that begins earning interest right away.

your deposit
Annual rate

The quoted yearly interest rate. The higher the rate, the faster the balance builds, though so does the tax on it.

% per year
Compounding

How often interest is added back to the balance. More frequent compounding earns a little more at the same rate.

yearly to daily
Interest tax

Banks take a 20 percent final tax on time deposit interest, unless the deposit is held five years or more.

20% or exempt

Ads keep MayKwenta free to use. We keep them few and quiet.

Questions people ask

answered in plain words

Compound interest is interest earned on both your original deposit and the interest already added to it. Because each round of interest joins the balance, the next round is a little larger. Over a long enough term, this is what makes savings grow faster than a fixed amount each year.

The last ad on this page. Thank you for reading this far.

The other calculators

free and private, like this one
Take-Home PayMonthly net salary, with allowance, shift, and overtime.Income TaxAnnual and monthly tax under the TRAIN law brackets.SSS · PhilHealth · Pag-IBIGMonthly contributions, your share and your employer's.13th Month PayYear-end estimate with the ₱90,000 tax rule.GWA CalculatorGeneral weighted average, college or percentage scale.All calculatorsBrowse and search every tool, all 26 of them.