Quick answer: A budget only needs to answer one question: how much money is left over each month? Write down what comes in, write down what goes out, and subtract. That takes about five minutes. The free sheet at the bottom does the math for you.
I have made a lot of budgets. Spreadsheets with forty categories. Apps that watched my bank account and scolded me about coffee. Once, a binder. Every single one died within a month.
They didn't fail because I'm bad with numbers. I worked in the mortgage business for years. I can read a balance sheet. They failed because they asked for more than I would ever give them.
Why do most budgets fail?
The classic budget wants you to track everything. Every purchase, sorted into the right bucket, checked every week. That's a part-time job. A boring one. So you skip a week. Then you're behind. Then the budget is wrong. A wrong budget is worse than no budget, because it lies to you with a straight face.
The other kind of budget fails the opposite way. It's so vague it says nothing. "Spend less than you make." Sure. How much less? On what?
What is a simple budget that actually works?
The budget I use now has sixteen numbers on it. It takes about five minutes the first time. Less after that. It answers one question:
What's really left over every month?
That's it. Not "did I spend too much on groceries." Not "what's my eating-out ratio." Just money in, money out, and the gap between them.
The sixteen numbers are things you already know, more or less. Take-home pay. Rent or mortgage. Power and water. Car. Insurance. Food. The smallest payments on your debts. Subscriptions. Round everything to the nearest ten dollars. Being exact is the enemy here. Being exact is what makes you quit.
Why does knowing the leftover number matter so much?
Once you know the gap, three things happen fast.
You find out if it's a minus. A lot of people are slowly going backward and don't know it. The credit card quietly covers the difference. Seeing a minus sign feels bad for about a day. Then it becomes the most useful thing you know.
You see what subscriptions cost per year. Twelve dollars a month sounds like nothing. A hundred and forty-four dollars a year, times nine subscriptions, is a real debt payment.
You know how much you can throw at debt. Not a guess. A number. That number goes into the debt snowball plan and turns into a debt-free date.
How often should you update a budget?
Only when something changes. New job. New rent. A subscription you cancelled. That's all. You don't track every day. You don't sort receipts. You keep one honest page up to date.
If the leftover number is smaller than you'd like, you have two levers. Earn more, or cut. Cutting is faster. It's what selling everything I don't use has been teaching me. Every bill I get rid of makes the gap bigger, forever.
Get the free budget sheet
The exact sheet I use is free on the resources page. No sign-up. Download it, fill in the shaded cells, and read the number at the bottom. It's the same sheet I filled in on day one of the rebuild. It's how I know where every dollar from the sell-off goes.
Five minutes. Tonight. It's the best thing you'll do for your money this week.
Frequently asked questions
What is the easiest way to make a budget?
Write down your take-home pay. Write down your monthly bills. Subtract. The number left over is your budget. Everything else is extra detail you can add later, or never.
How much money should be left over each month?
More than zero is the first goal. After that, aim for enough to cover a surprise, like a car repair, without using a credit card. Then point the rest at your smallest debt.
Do I need a budgeting app?
No. A single page with sixteen numbers works. Apps that connect to your bank can help, but many people stop using them within a month. Simple wins because you keep doing it.
