How to create a
monthly budget
from scratch
You don't need complex spreadsheets or apps with 200 features. You need 5 clear steps, done once a month. This guide takes you from zero to a salary that actually lasts.
Why most people don't budget (and how everything changes when you do)
It's not about willpower or income. People without a budget aren't irresponsible — they're just without a map. They spend, reach month-end wondering where the money went, and repeat. A budget doesn't magically make you save more: it lets you see where you're headed before you get there.
📊 See where your money actually goes
Most people underestimate discretionary spending by 30–40%. One month of real tracking is eye-opening: the daily coffee isn't the problem, but the total on restaurants + delivery + bars often is.
🎯 Stop postponing your goals
"I'll save what's left over" never works — there's never anything left over. A budget reverses the logic: reserve savings first, then spend the rest. The difference over 12 months is substantial.
😌 Less anxiety, not more restriction
Paradoxically, having a budget reduces financial anxiety. You know what you can spend without worry. You don't feel guilty about a lunch out because you know it fits your planned budget.
💬 Fewer arguments (for couples)
Money arguments in couples almost always stem from misaligned expectations, not from lack of resources. A shared budget aligns expectations before they become a problem.
How to create a monthly budget in 5 steps
- Calculate your monthly take-home pay Start with what lands in your bank account, not your gross salary. If you have multiple income sources (salary + freelance + rental income), add them all. If your income is variable, use your 6-month average as a conservative baseline — update as each month plays out.
- List all your fixed monthly expenses Rent or mortgage, utilities, internet, loan repayments, insurance, recurring subscriptions (streaming, gym, apps). These barely change month to month. Add them up: this is your floor — the minimum you'll spend no matter what.
- Set budgets for variable spending Groceries, restaurants/bars, occasional transport, clothing, hobbies, entertainment. For each one, assign a realistic monthly maximum — not an ideal, a realistic one. Your first month is an approximation; you'll refine it with actual data in the months that follow.
- Treat savings as a fixed expense This is the step most guides skip. Savings aren't what's left over: they're a fixed amount that leaves your account the day after your salary arrives, via automatic transfer to a separate account. Start with 5–10% if 20% feels too ambitious — the habit matters more than the amount.
- Track actual spending and review monthly At month-end, compare budget vs actual. Not to punish yourself — to understand: where did you overspend? Was it predictable? What do you change next month? With migj you import your bank CSV and the comparison is automatic — no manual entry required.
Monthly spending categories: a starting template
There's no one-size-fits-all perfect budget. But these categories cover 95% of a typical household's spending. Remove the ones that don't apply to you and add your own specifics.
| Category | Type | Suggested % of budget | Examples |
|---|---|---|---|
| Housing | Fixed | 25–35% | Rent, mortgage, building service charge |
| Bills & utilities | Fixed | 5–8% | Gas, electricity, water, internet, phone |
| Groceries | Variable | 10–15% | Supermarket, farmers' market, fresh produce |
| Transport | Mixed | 5–10% | Monthly pass, fuel, parking, taxis, rideshare |
| Insurance | Fixed | 3–5% | Car, home, life, health |
| Restaurants & eating out | Variable | 5–10% | Restaurants, bars, takeaway, coffee shops |
| Clothing | Variable | 3–5% | Clothes, shoes, accessories |
| Health | Variable | 2–4% | GP visits, prescriptions, dentist, glasses |
| Leisure & hobbies | Variable | 3–6% | Gym, sport, culture, subscriptions |
| Home & maintenance | Variable | 2–4% | Repairs, furniture, cleaning |
| Travel & holidays | Planned | 3–5% | Monthly accrual for annual trips |
| Gifts & occasions | Planned | 1–2% | Birthdays, Christmas, weddings |
| Savings | Priority | 10–20% | Emergency fund, investments, goals |
💡 First month: observe before you judge
Use your first month of tracking only to understand how you actually spend — without trying to change anything. Real data will tell you where to focus. Month two, you start optimising from a solid foundation.
The 5 most common monthly budget mistakes
❌ Forgetting non-monthly expenses
Car insurance (annual), road tax, dentist, summer holiday — they don't show up every month, but they exist. Divide them by 12 and set aside that amount monthly in a dedicated pot. Otherwise July suddenly wrecks your budget "inexplicably".
❌ Overly optimistic budgets
Writing "restaurants: £80/month" when you consistently spend £250 isn't budgeting, it's wishful thinking. Your first budget must be based on what you actually spend, then you optimise. Start with data, not aspirations.
❌ Quitting after one bad month
A budget isn't a pass/fail exam. It's a tool that improves month by month. One month with extra expenses (car repair, medical bill) doesn't mean the system doesn't work.
❌ No emergency fund
Without 3–6 months of expenses saved, any unexpected event (breakdown, redundancy, medical cost) blows up your entire budget. The emergency fund is the foundation of any financial plan — it comes before investing.
❌ Manually entering every transaction daily
Unsustainable after two weeks. Use the right tool: import your bank CSV once a month and get everything categorised automatically. 5 minutes a month, not 5 minutes a day.
How migj makes monthly budgeting genuinely easy
migj was built around one idea: budgeting should take 90 seconds the first time and 30 seconds every month after. It shouldn't become a second job.
Guided wizard on first login
migj asks 5 questions about your lifestyle and automatically generates suggested budget categories. You don't have to build from scratch — just confirm or adjust.
CSV import from your bank
Download the CSV from your online banking and import it. migj auto-detects Monzo, Starling, Revolut, N26, Intesa, UniCredit and more. Transactions categorised without manual entry.
Live monthly dashboard
See instantly how much you've spent vs budget per category. When a category hits 80%, you get an alert — you can still course-correct before month-end.
👫 Budgeting with a partner or family?
migj handles shared budgets for couples and families with granular privacy. Each member adds their own transactions; the dashboard shows everything consolidated.