How to make a budget: step by step

2 min read · 8 steps · Updated 3 October 2026

A budget is a plan for your money before the month starts, so you decide where it goes instead of wondering where it went. It does not need an app or a finance degree. One hour with your bank statements is enough for the first version.

This is general information, not financial advice. Interest rates, taxes and account rules differ from country to country.

Step by step

1. Add up your income

   Take what actually arrives in your account each month: pay after tax, benefits, child benefit, side income. With irregular income, use the average of the last six months, or better the lowest month.

   Done

2. List the fixed costs

   Rent or mortgage, electricity and heating, water, internet and phone, insurance, travel pass or car costs, childcare, loan repayments. Include yearly bills, such as car insurance, divided by twelve.

   Done

3. List the costs of financial products

   Bank fees, credit card interest, overdraft charges and subscriptions belong on the list too. They are easy to overlook because they leave the account by themselves.

   Done

4. Track the flexible spending

   Food, household items, clothes, eating out, hobbies, gifts. Do not guess. Go through one or two months of statements, or keep a spending diary for a month. Guesses are nearly always too low.

   Done

5. Do the sum

   Income minus all spending. If something is left, give it a job: debt, emergency fund, a savings goal. If the number is negative, you now know by how much, which is the first step out.

   Done

6. Cut where it hurts least

   Start with what you do not use: forgotten subscriptions, memberships, insurance you have twice. Then compare the contracts for energy, phone and internet. Only then look at food and leisure.

   Done

7. Give yourself limits

   Set a monthly amount for each flexible category. Many people find a simple split helpful, such as the 50/30/20 rule: half for needs, 30 percent for wants, 20 percent for savings and debt.

   Done

8. Check once a month

   Compare plan and reality at the end of each month and adjust. A budget that is corrected every month becomes accurate after about three.

   Done

Good to know

If debts are the problem, pay the one with the highest interest rate first, while keeping up at least the minimum payment on all others. Buy now, pay later plans charge no interest but do charge late fees.

If you have already missed payments, speak to a free debt advice service early. In Germany that is the Schuldnerberatung of the city or a charity.

Tools on this site: the 50/30/20 budget calculator and the cost in hours calculator, which shows what a purchase costs in working time.

Related: the 50/30/20 rule, forgotten subscriptions: how to find and cancel them and how to start saving money.

In short: Income after tax, fixed costs, financial costs, tracked flexible spending from real statements. Income minus spending. Cut unused things first, set limits per category, review monthly.