Free personal finance tool
Budget Calculator
See where your monthly money goes and what is left to save, invest, or put toward your goals.
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Start
BudgetCalculator
Plan smarter. Spend better. Save more.
8 Easy StepsA simple step-by-step process
100% PrivateCalculated in your browser
Smart & AccurateGet personalized results instantly
Secure & PrivateYour data stays with you
Step 2 of 8
Set your currency
Choose the currency you want to use throughout your budget.
Step 3 of 8
What do you bring in?
Enter monthly, post-tax take-home amounts.
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Step 4 of 8
Your home costs
Add the monthly costs that keep a roof over your head.
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Step 5 of 8
Everyday living
Estimate a normal month rather than an unusually cheap or expensive one.
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Step 6 of 8
Finance commitments
Include minimum debt payments and other fixed obligations.
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Step 7 of 8
Goals and lifestyle
Add flexible spending plus what you deliberately save or invest.
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Step 8 of 8
Your monthly picture
$0left over each month$0 per year
Essentials0%
Lifestyle0%
Saving0%
Unassigned0%
How this budget calculator works
You’ll move through eight short steps covering your currency, income, housing, everyday costs, financial commitments, lifestyle spending, and saving. Enter monthly amounts using take-home income. Your results update entirely in your browser, and your figures remain on this device unless you choose Start over.
Reading your budget split
A common starting point is to put roughly 50% of take-home pay toward essentials, 30% toward lifestyle spending, and 20% toward saving or additional debt payoff. It is a guideline, not a score. Use it to spot categories that may have moved out of proportion for your own circumstances.
What is a debt-to-income ratio?
This calculator compares your housing costs and debt repayments with your take-home income. It is a simple planning indicator rather than the formal ratio a lender may calculate from gross income and credit obligations.
Common questions
Should I enter gross or net income?
Use take-home pay: the amount that actually reaches your account after tax and deductions.
What about expenses that only happen once a year?
Divide the yearly cost by twelve and enter the monthly amount. This keeps every figure on the same basis.
Is my data saved anywhere?
It is saved only in this browser’s local storage so you can return without retyping it. Nothing is sent to The Penny Flow. Start over removes the saved calculator data.
What if my balance is negative?
Review flexible lifestyle costs first, then look at larger fixed commitments. A negative result means the amounts entered are greater than the income entered.