Finance Calculator

Use this free finance calculator for a general future-value estimate from starting amount, monthly contribution, annual rate, and time horizon.

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Formula steps Estimate limits shown Examples included Private history

Starting amount ($)Monthly contribution ($)Estimated annual rate (%)Time (years)

Projected future balance$20,642.25

$2,000 plus $150.00/mo at 5%

Total contributions: $16,400.00
Estimated growth: $4,242.25
Time: 8 years

This is a projection, not a guaranteed return.

Formula steps

Convert the annual return assumption into monthly growth.
Compound the starting amount over the full time period.
Add each monthly contribution as an end-of-month deposit.
Estimated growth equals ending balance minus total contributions.

How to use the finance calculator

Enter the requested dollar amounts, rates, terms, tax settings, or contribution details.
Use rates as percentages, such as 6.5 for 6.5%, and check whether a field asks for a monthly or annual amount.
Press the calculate button to see the answer, supporting metrics, and formula steps.
Use the result as a planning estimate only, then copy it if the assumptions look right.

Common uses

Run a quick future-value estimate without choosing a specialized tool.

Project a savings balance from monthly contributions.

Compare time, rate, and contribution scenarios.

Use as a general finance scratchpad before opening a specific calculator.

Examples

Savings projection $2,000 plus $150/month at 5% for 8 years

Future balance estimate

Short-term plan $500 plus $75/month for 2 years

Projected balance

Rate check 3%, 5%, and 7% assumptions

Compare ending balances

Frequently asked questions

Quick answers about formulas, rates, payment assumptions, estimate limits, examples, and private in-browser history.

What can I use the Finance Calculator for?

Use it for quick planning, comparison, and what-if estimates before you check exact numbers with a lender, tax professional, payroll provider, or financial adviser.

How does the Finance Calculator calculate the result?

The calculator compounds a starting amount and monthly contributions using the estimated annual rate converted to monthly growth.

Is this financial, tax, or legal advice?

This calculator gives an educational estimate only. It does not include every fee, lender rule, tax rule, local rate, credit, penalty, or personal financial detail.

Are my finance inputs private?

Yes. The calculator runs in your browser tab. Recent answers stay only on the page while you use it and are not sent to a server.