Monthly planning tool

Budget Calculator

Estimate monthly income, track spending, compare your budget against a simple 50/30/20 split, and see how much room you have left for savings.

Cleaner inputs Better spacing, focus states, and mobile layout.

Instant totals See monthly and yearly numbers update in one click.

Useful summary Leftover cash, savings target gap, and quick advice.

Income

Add your main income and any extra monthly side income.

Monthly amounts

Salary before expenses

Main monthly income after tax if that is easier for your planning.

Side income optional

Freelance work, bonuses, or any extra monthly amount.

Expenses

Split out your main monthly costs so your budget is easier to understand at a glance.

Core spending

Rent / mortgage

Bills

Groceries

Transport

Entertainment

Other

Savings target

Set a monthly goal to see whether your current budget supports it.

Goal check

Desired monthly savings

This is your target, not your current savings balance.

Results

Your main monthly and yearly numbers.

Total income

£0.00

Total expenses

£0.00

Leftover

£0.00

Yearly leftover

£0.00

Enter your numbers and calculate to see your budget summary.

Savings target progress 0%

50 / 30 / 20 view

A quick comparison of your spending and savings mix.

Needs

Wants

Savings

Quick notes

Small guidance based on the numbers you enter.

Start simple Enter your income, your main expenses, and your savings target to get a clear monthly baseline.

Tool guide

How to use the budget calculator

Estimate monthly money left after income and regular expenses. Use this page for a fast estimate, compare a few scenarios, and adjust the inputs until the result matches what you need to decide.

This tool also sits inside the CalcBeacon finance cluster. That makes it easier to find from category pages, related tools, and supporting guides when you want to compare options.

When it is usefulUse this tool when you want a fast estimate, want to compare options, or want a clearer answer before moving on.

Common mistakesCheck that your numbers use the same units, avoid leaving key fields blank, and test a second scenario so you can see how sensitive the final result is.

Next useful stepAfter using this page, compare the result with a related calculator or open the guide to check the number in context.

Related tools

Use these related tools to compare nearby calculations and move to the next step faster.

Frequently asked questions

What does the budget calculator show?

It gives you a fast estimate based on the values you enter on this page.

Is this budget calculator free to use?

Yes. CalcBeacon tools are designed for quick free use in the browser.

How it works

How this calculator works

Estimate monthly money left after income and regular expenses.

Method

Use the calculator inputs to estimate the result instantly based on the values entered.

Example

Enter a realistic example in each field, then compare the output and adjust the inputs to test a second scenario.

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