Finance · FREE ONLINE TOOL

Budget Calculator

Build a monthly budget from take-home totals or mixed-period gross-income lines, with pretax savings, assumed tax and debt payments.

Currency: USD

Enter all amounts in USD. Changing currency keeps numbers unchanged; no exchange rate is applied.

Your inputs

Calculations run in your browser. No account needed.

EXAMPLE RESULTCalculated locally
Remaining monthly balance
$900.00
Total allocated
$4,100.00
Savings share
10%
Clear inputs. Transparent methods.
My workspace

Calculate with your inputs to save a result or compare scenarios.

Monthly allocation

USD

Your entered spending and savings allocations.

Total$4,100.00
  • Housing$1,500.0036.6%
  • Utilities$300.007.3%
  • Food$500.0012.2%
  • Transport$400.009.8%
  • Insurance$300.007.3%
  • Debt$300.007.3%
  • Savings$500.0012.2%
  • Other$300.007.3%

How it works

A useful distinction

A monthly allowance is not cash timing

An annual insurance bill of 1,200 becomes a 100 monthly budget allowance. That smooths the plan but does not pay a bill due next week; compare the allowance with cash already reserved.

Making a monthly budget from mixed expenses

Convert income and expenses to a common period before comparing the totals. A yearly bill can be easy to miss in a monthly budget unless an allowance is made for it. Review the remaining balance after recurring obligations, then consider irregular spending separately. The mixed-period mode helps align timing; it does not know about transactions that have not been entered.

Monthly budget: formula and assumptions

Remaining balance = take-home income − all entered allocations.

Avoid double-counting payroll deductions already removed from take-home income.

Mixed-period budget & debt ratio: formula and assumptions

Surplus = gross monthly income − pretax saving − modeled tax − living expenses − debt payments.

Each line uses its own monthly or annual period. DTI includes debt payments and uses gross income. The flat tax scenario does not implement progressive income-tax rules.

Worked example

Reference example currency: USD. These fixed examples do not change with your calculator preferences.

Using the Monthly budget example:

Inputs
Monthly take-home income ($)
5000
Housing ($)
1500
Utilities ($)
300
Food ($)
500
Transportation ($)
400
Insurance & healthcare ($)
300
Debt payments ($)
300
Savings & investing ($)
500
Other spending ($)
300
Method

Remaining balance = take-home income − all entered allocations.

Result

Example result

Remaining monthly balance: $900.00

Total allocated: $4,100.00

Savings share: 10%

These are illustrative inputs. Change the values to explore a different scenario.

What to keep in mind

The simple budget mode takes take-home income. Mixed-period budget uses gross income, deducts entered pretax saving and a flat scenario tax, and keeps debt payments separate from living expenses.

Formula references

References explain the underlying methods; they do not imply endorsement or individual professional review of Finflo.

Common questions

Should I enter gross salary or take-home income?

Use take-home income in the simple budget. In Mixed-period budget & debt ratio, use gross income; that mode separately subtracts pretax saving and the entered flat tax.

Can I combine annual and monthly amounts?

Yes. Each mixed-period line has its own annual or monthly selector; annual amounts are divided by twelve.

How can I avoid counting a debt payment twice?

Enter a payment in either living expenses or debt payments, not both. The mixed-period model deducts the two groups separately.

Prepared by Finflo. See our methodology and editorial policy. Read the relevant professional-advice limitations.