AstroDunia
Spending planner header

Spending Calculator

Plan your month with categories, quick 50/30/20 targets (or your mix), and a live summary. Your data stays in your browser.

Needs/Wants/Savings50/30/20
Planned total
$0.00
Left after spend
$0.00

The 50/30/20 split is a common heuristic. Use it as a starting point and adjust for your situation.

Category
Group
Amount
Actions

How this tool helps

  • Track Needs / Wants / Savings and see shares vs income.
  • Use the 50/30/20 rule or set your own percentages.

The 50/30/20 rule is a popular budgeting heuristic; many consumer guides suggest listing income & expenses monthly and revisiting as you review actuals.

Tips for better results

  • Audit subscriptions each quarter.
  • Automate transfers on payday (“pay yourself first”).
  • Use bucketed accounts (bill-pay, spending, sinking funds).
Monthly Total
$0.00
Composition by group
Actual vs target

Toggle 50/30/20 or set your own target mix. Needs/Wants/Savings targets are applied as a share of income.

Heuristics
Enter monthly take-home income to see target amounts.
Pro tips:
  • Audit recurring charges (subscriptions, memberships) quarterly.
  • Automate transfers on payday (“pay yourself first”).
  • Use “buckets” or sinking funds for irregular bills.
Subscriptions auditPay yourself firstSinking funds
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