Turn spare change into visible progress

Round-Up Savings Simulator Online

Estimate how rounding up everyday purchases could build a savings habit. Adjust your spending frequency, average round-up, multiplier, and timeline to see the small amounts add up.

Your estimates stay in this browser

Shape your round-up habit

Use recent transactions for a more personal estimate.

Saved
28
$
$
% APY
$
5 years
Auto-saved locally
Estimated round-up balance
$4,183

After 5 years of automatic round-ups

84%of goal
Round-ups per month$63.09
Round-ups per year$757.12
Estimated interest$397.42
Your everyday round-ups could cover 84% of your goal.

Your spare-change snowball

BalanceRound-ups
TodayYear 3Year 5
See one round-up

A little left over. A little set aside.

Enter a sample purchase to see it round up to the next whole unit.

$
Rounded total$5.00
Moves to savings+$0.65

How round-up savings can add up

A round-up program typically moves the difference between a purchase and the next whole currency unit into savings. The amounts are small, but frequent eligible purchases can turn them into a steady contribution. This simulator makes that pattern visible without connecting to a bank account.

1

Estimate your frequency

Check a typical week and count eligible card purchases. A realistic average produces a more useful projection than your busiest week.

2

Estimate the spare change

Review several real round-ups if you can. Around half a unit is a simple starting point when cents are spread fairly evenly.

3

Compare gentle boosts

Try a multiplier or longer timeline and check the monthly impact. The best savings habit is one that still fits your budget.

The estimate in one line

Purchases per week × average round-up × multiplier × 52 weeks, contributed monthly and grown using the interest rate you enter.

Planning note: This free round-up savings calculator is educational, not financial advice. It does not model every bank or app rule, transaction exclusion, refund, fee, tax, rate change, or spending pattern. Avoid making extra purchases just to create round-ups.

Round-up savings simulator FAQ

What are round-up savings?

A round-up feature rounds an eligible purchase to the next whole currency unit and moves the difference into savings. A purchase of $4.35, for example, creates a $0.65 round-up.

How does this online round-up savings simulator work?

It multiplies estimated weekly purchases by your average round-up and selected boost. That becomes an estimated monthly contribution, which is projected with optional monthly interest over your selected number of years.

What should I enter as my average round-up?

Your own transaction history is best. If purchase cents vary, about half of one currency unit can be a reasonable starting estimate for rounding to the next whole unit. Actual results depend on your purchases and the service's rules.

Does doubling round-ups mean the store charges more?

Usually, a multiplier means a larger transfer from your linked funding account into savings, not a change to the purchase price. Check the exact terms of the bank or app you use.

Does the simulator guarantee my result?

No. It is a planning estimate. Purchase frequency, eligibility, refunds, transfer limits, interest rates, fees, and account rules can all change the real amount.

Is my information private?

Yes. The calculation runs locally in your browser. Your latest settings are stored on this device only and are not connected to a financial account.

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