Calcufast

Monthly Budget Calculator

Plan your finances with the 50/30/20 rule: needs, wants, and savings

How to Create a Monthly Budget

A monthly budget is the most important tool for controlling your personal finances. It lets you know exactly where your money goes and how much you can save.

The 50/30/20 Rule

The most popular and easiest method to implement:

50% — Needs

Essential expenses you can't avoid:

  • Rent or mortgage
  • Groceries
  • Utilities (water, electricity, internet)
  • Transportation
  • Health insurance

30% — Wants

Expenses that improve quality of life but aren't essential:

  • Entertainment and outings
  • Non-essential shopping
  • Subscriptions (Netflix, Spotify)
  • Restaurants and dining out
  • Hobbies

20% — Savings & Investment

Your financial future:

  • Emergency fund (3-6 months of expenses)
  • Goal savings (travel, car, home)
  • Investments
  • Extra debt payments

The 70/20/10 Rule

A more realistic alternative for beginners:

  • 70% for total expenses (needs + wants)
  • 20% for savings
  • 10% for investment or debt payoff

Tips for Sticking to Your Budget

  1. Track everything: every expense, no matter how small
  2. Review weekly: don't wait until month's end
  3. Automate savings: transfer to savings on payday
  4. Be realistic: an overly strict budget is hard to maintain
  5. Adjust monthly: your needs change, so should your budget