Compound Savings Calculator: Watch Your Money Grow With Interest

Wondering how much your savings could grow over time? Our free Compound Savings Calculator helps you estimate the future value of your money using starting savings, monthly contributions, and an assumed interest rate. Watch how compound interest adds up over the years, compare your own deposits with interest earned, and explore how saving a little more each month could change your results. You can also adjust for inflation, estimate when you might reach a savings goal, and print a personalized savings plan.

✦ THE THRIFTY HABIT · SAVINGS GROWTH STUDIO

Little deposits. Big possibilities.

See what your savings could become over time. Separate the money you put in from the interest it earns, test small changes, and plan toward a goal — without connecting a bank account.

📈 Compound growth🌱 Monthly deposits🎯 Goal timeline🔒 Private browser saving

Build your savings story

Try a fictional example or put in your own numbers. Adjust anything, anytime.

Your assumptions

Starting savings ($)Money already set aside today Monthly contribution ($)New money deposited every month Annual interest rate (%)Illustrative nominal APR, not a promised return Years to saveFrom 1 to 50 years Interest compoundingAffects growth from the same nominal APR Deposit timingEarlier deposits earn more interest Raise monthly deposits yearly (%)Optional annual increase in contributions Assumed inflation (%)Used to show future buying power in today’s dollars First savings monthUsed for your estimated target date Savings goal ($, optional)Leave empty to explore without a target

What is being modeled? A fixed nominal annual interest rate, regular monthly deposits, no withdrawals or fees, and optional yearly contribution increases. This is a planning illustration, not a bank quote or investment forecast.

Automatically saved on this device.

Estimated future savings$0After your chosen savings period

Your money deposited$0Starting amount + monthly contributions

Compound interest earned$0Estimated growth from the assumed APR

Value in today’s dollars$0Ending purchasing power after inflation

Where your final balance comes from

Deposits Interest earned

Watch the years add up

The green line shows total savings; the terracotta line shows just the money you deposited.

Growth curve

🌿 Interest is doing part of the workYour interest earnings will appear here.

🛒 Inflation matters, tooYour purchasing-power comparison will appear here.

Your milestones and savings goal

A few checkpoints along the way, using the assumptions above.

Long-term view

🎯 When will I reach my goal?Enter a savings goal to estimate a timeline.

🧮 What monthly deposit would reach it?Enter a savings goal to estimate the required contribution.

The little-more lab

What could happen if you put a little extra aside, or your assumed rate changed?

Live what-if

Extra deposit each month: +$50

Interest rate adjustment: 0 percentage points

New estimated final balance$0

Difference vs. original plan$0

Of that difference, extra interest$0

Scenario estimates update as you move either slider.

Year-by-year savings breakdown

Each row includes your deposits, total earned interest, and the account balance at that year-end. The printable report includes every year.

Year	Deposited	Interest	Balance

Save your plan or take it with you

This tool stores inputs in your browser. Export a private backup if you might clear browsing data or switch devices.

No account needed

Your plan is private to this browser until you export or share it.

How the compound savings math works

The interest field is a nominal annual rate (APR). The calculator converts it to an equivalent effective monthly growth rate based on the compounding frequency you select, then models monthly deposits at the beginning or end of each month. Daily compounding uses a 365-day year and average monthly intervals. Actual banks may credit interest on different dates or use minimum-balance rules, so exact results can differ.

Your own deposits are counted separately from earned interest. Optional yearly increases raise monthly deposits once every 12 months. Inflation reduces the purchasing power of your future balance but does not change the nominal account balance. The savings-goal estimate uses your nominal target; it does not automatically increase your target with inflation.

Important: Rates are hypothetical and held constant in the model. Fees, taxes, withdrawal penalties, and changes in rates are excluded. This calculator is an educational savings-planning aid, not personalized investment or financial advice.

Keep reading: make saving easier

Practical guides on setting goals and finding room in your budget to save.

Start saving when you have almost nothingEven small deposits can be a useful beginning. Build your emergency fundDecide what to save before chasing bigger goals. Set money goals you can stick toTurn a number into a doable routine. Budgeting for beginnersMake room for saving without guessing. Try zero-based budgetingGive the dollars you save a real purpose. Do a spending auditFind recurring costs that you could redirect. Lower your regular billsFree up monthly contributions without extra income. Spend less on impulse purchasesKeep more money for your savings goals. Small habits that add upEveryday savings ideas with a long-term purpose. Rebuild after a setbackRestart saving at a pace that feels possible. Keep your budget flexibleHandle surprise costs without abandoning your plan. Manage money stressUse planning as a guide, not pressure.

The Thrifty Habit · Free educational savings tool. This calculator does not connect to accounts or send personal savings details to the website.