How does this savings calculator work?

Enter a starting amount, a regular monthly contribution, an annual interest rate (APY), and a time frame. The calculator compounds your balance over time and shows how much you’ll have saved, separating your contributions from the interest earned.

What interest rate should I use?

Use the APY offered by the account you plan to use. A traditional savings account often pays well under 1%, while a high-yield savings account may pay around 4%. Because APY already includes compounding, it’s the fairest number to compare accounts by.

How much should I save each month?

A common guideline is to save at least 20% of your income across goals, but any consistent amount helps. The calculator lets you test different monthly contributions so you can find a number that fits your budget and still reaches your goal.

Where should I keep my savings?

For money you may need soon — like an emergency fund — a high-yield savings account keeps it safe, liquid, and earning interest. For longer-term goals you might consider CDs or investments, which can earn more but carry lock-ups or market risk.

How much does $10,000 earn in a savings account at 4%?

At a 4% annual rate compounded monthly, $10,000 grows to about $10,407 after one year — roughly $407 in interest — then about $12,210 after five years and $14,908 after ten, with no further deposits. The same balance in an account paying close to nothing would earn a small fraction of that, which is why the rate you choose matters as much as the amount you save.

How much can I save in 5 years?

It depends almost entirely on your monthly contribution. Starting from zero at a 4% annual rate, saving $100 a month reaches about $6,630 in five years, $250 a month reaches about $16,575, and $500 a month reaches about $33,150. Enter your own figures above to see the exact number for your situation.

What percentage of my income should I save?

A widely used starting point is the 50/30/20 framework: about 50% of take-home pay for needs, 30% for wants, and 20% for savings and debt payoff. On $4,000 of monthly take-home pay that is roughly $800. Treat 20% as a direction rather than a rule — high-interest debt often deserves the money first, and a smaller amount you actually sustain beats an ambitious one you abandon.

Calculator

Savings Calculator

See how your savings grow over time with regular monthly contributions and interest. Enter a starting amount, monthly deposit, APY, and time frame.

Input Details

Currency

Enter every amount below in $. Changing this switches the unit — figures are not converted.

Starting Amount ($)

Monthly Contribution ($)

Annual Interest Rate / APY (%)

Time Frame (years)

Results

Results appear here as you type.

How Savings Grow Over Time

Your savings balance grows from two sources: the money you deposit, and the interest that account earns. When that interest is added to your balance and then earns interest itself, the growth compounds — and the longer your money stays invested, the larger the share of your balance that comes from interest rather than your own deposits.

Two habits make the biggest difference: choosing an account with a competitive rate, and contributing consistently. Together they turn even modest monthly savings into a meaningful balance over the years. Understanding a few core ideas helps you get the most from every dollar you set aside.

The power of compounding

Compounding means earning interest on both your original savings and the interest you've already earned. Early on, the effect looks small, but over many years it accelerates as your balance grows. This is why time in the account matters so much: money saved sooner has more years to compound than the same amount saved later.

High-yield vs traditional savings accounts

Many traditional savings accounts at big banks pay very little interest, while high-yield savings accounts (often offered by online banks) tend to pay noticeably more. The gap can be significant — sometimes several percentage points — which multiplies the interest you earn on the same balance. Because rates move with the broader economy, compare current offers rather than assuming any fixed number, and confirm the account carries deposit insurance.

Comparing accounts with APY

When shopping for a savings account, compare the APY (annual percentage yield) rather than the stated interest rate. APY reflects the effect of compounding over a year, so it gives you an apples-to-apples measure of what you'll actually earn. A higher APY on the same balance means more interest, making it the single most useful number for comparison.

Automation, goals, and beating inflation

Setting up automatic transfers on payday makes saving consistent and removes the temptation to spend first. Tying your savings to specific goals — an emergency fund, a down payment, a trip — helps you stay motivated and choose the right time frame. Keep in mind that inflation slowly erodes the value of idle cash, so earning a competitive yield helps your savings at least keep pace with rising prices rather than losing ground.

What a 4% savings account actually earns

A high-yield savings account paying around 4% turns an idle balance into meaningful interest without any risk to your principal. Here is what a one-time deposit grows to at 4% a year, compounded monthly, with no further contributions:

Balance after 1, 5 and 10 years on a one-time deposit at 4% annual rate, compounded monthly
Starting amount	After 1 year	After 5 years	After 10 years	Interest earned
$1,000	$1,041	$1,221	$1,491	$491
$5,000	$5,204	$6,105	$7,454	$2,454
$10,000	$10,407	$12,210	$14,908	$4,908
$25,000	$26,019	$30,525	$37,271	$12,271

The pattern worth noticing: the interest column is doing real work with no effort from you. Leaving the same balance in an account paying close to nothing would earn a small fraction of these amounts, which is why the account you choose matters as much as the amount you save. Deposit rates move with the wider rate environment, so treat 4% as an illustration and compare current offers.

How much can I save with a monthly habit?

Most savings balances are built by contribution, not by interest — especially in the early years. Starting from zero, here is what a consistent monthly deposit grows to at 4% a year:

Balance after 1, 5 and 10 years of monthly deposits at 4% annual rate, compounded monthly
Saved monthly	After 1 year	After 5 years	After 10 years	Interest earned
$50/mo	$611	$3,315	$7,362	$1,362
$100/mo	$1,222	$6,630	$14,725	$2,725
$250/mo	$3,056	$16,575	$36,812	$6,812
$500/mo	$6,111	$33,149	$73,625	$13,625

Use this in reverse when you have a target. If you need a specific amount by a specific date, find the row and column that get you closest, then enter your own numbers in the calculator above to fine-tune the monthly figure.

What percentage of your income should you save?

A widely used starting point is the 50/30/20 framework: roughly 50% of take-home pay for needs, 30% for wants, and 20% for savings and debt payoff. On $4,000 of monthly take-home pay that is about $800 a month; on $6,000 it is about $1,200.

Treat 20% as a direction rather than a rule. If you are paying down high-interest debt, that often deserves the money first. If you are starting out, a smaller consistent amount beats an ambitious one you abandon in two months — the table above shows that even $50 a month compounds into something real. What matters most is that the transfer happens automatically, before you have a chance to spend it.

Answers

Frequently asked questions

: Enter a starting amount, a regular monthly contribution, an annual interest rate (APY), and a time frame. The calculator compounds your balance over time and shows how much you’ll have saved, separating your contributions from the interest earned.
: Use the APY offered by the account you plan to use. A traditional savings account often pays well under 1%, while a high-yield savings account may pay around 4%. Because APY already includes compounding, it’s the fairest number to compare accounts by.
: A common guideline is to save at least 20% of your income across goals, but any consistent amount helps. The calculator lets you test different monthly contributions so you can find a number that fits your budget and still reaches your goal.
: For money you may need soon — like an emergency fund — a high-yield savings account keeps it safe, liquid, and earning interest. For longer-term goals you might consider CDs or investments, which can earn more but carry lock-ups or market risk.
: At a 4% annual rate compounded monthly, $10,000 grows to about $10,407 after one year — roughly $407 in interest — then about $12,210 after five years and $14,908 after ten, with no further deposits. The same balance in an account paying close to nothing would earn a small fraction of that, which is why the rate you choose matters as much as the amount you save.
: It depends almost entirely on your monthly contribution. Starting from zero at a 4% annual rate, saving $100 a month reaches about $6,630 in five years, $250 a month reaches about $16,575, and $500 a month reaches about $33,150. Enter your own figures above to see the exact number for your situation.
: A widely used starting point is the 50/30/20 framework: about 50% of take-home pay for needs, 30% for wants, and 20% for savings and debt payoff. On $4,000 of monthly take-home pay that is roughly $800. Treat 20% as a direction rather than a rule — high-interest debt often deserves the money first, and a smaller amount you actually sustain beats an ambitious one you abandon.