A budget is simply a plan for your money. A spreadsheet is one of the best tools for it: it's private, flexible and free to use every month. Here's how to build one you'll actually keep using.
Step 1: List your monthly income
Write down every source of money you expect this month: salary, side income, benefits. Use what actually lands in your account after tax. If your income changes from month to month, use a careful, lower estimate.
Step 2: Choose your spending categories
Keep it short. 12 to 20 categories is plenty. A useful split is needs (rent, utilities, groceries, transport, insurance) and wants (dining out, shopping, entertainment, subscriptions, travel).
Step 3: Give every category a monthly budget
Start from what you really spent last month, then adjust. A popular starting point is the 50/30/20 rule: about 50% of income for needs, 30% for wants and 20% for savings and extra debt payments. It's a guide, not a law. Adjust it to your life.
Step 4: Track what you spend
Log each expense with a date, category and amount. Once a week is enough for most people. The key is that each transaction has a category, so your spreadsheet can total them with a simple SUMIFS.
Step 5: Compare budget vs actual
At the end of the month, look at each category: what you planned, what you spent, and the difference. Progress bars or color coding make it easy to see where you went over. Then adjust next month's plan.
What a good budget spreadsheet needs
- Dropdowns for categories, so totals are always right.
- A dashboard that shows the month at a glance.
- Bills and subscriptions in one place, so nothing gets missed.
- Savings goals with a clear target and date.
- A design you enjoy opening. If it's ugly or confusing, you'll stop using it.
Skip the setup
If you'd rather not build the formulas yourself, our Ultimate Budget Planner has all of this ready: monthly dashboard, transactions with dropdowns, recurring bills, savings goals, debt payoff and net worth. It works in Excel and Google Sheets and takes about 10 minutes to set up. Paying off debt first? Take a look at the Debt Payoff Planner.
How to stick with it
- Pick a fixed "money moment" each week, like Sunday morning coffee.
- Don't aim for perfect. A budget that's 90% right and used every month beats a perfect one you abandon.
- Celebrate small wins: a category under budget, a bill paid off, a goal reached.
This article is for general information only and isn't financial advice.