Left TodayHow Much Should I Spend Per Day? Daily Budget Calculator
“Can I afford this?” is a daily question, so it deserves a daily answer. Here’s how to work out exactly how much you can spend per day, with a calculator that does it for you.
There’s no universal right amount to spend per day. Someone with a higher income and low rent will have a bigger number than someone supporting a family on the same salary, and that’s expected. What matters is that your number is based on your real money and your real commitments, so you can spend it without guilt and still reach payday.
Daily budget calculator
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The daily budget formula
Daily budget = (money you have now − bills before payday − debt payments before payday − savings) ÷ days until payday
Always round down. A daily limit that’s slightly too low is safe; one that’s slightly too high runs out a day early.
What your daily budget should cover (and what it shouldn’t)
Your daily number is for the spending you decide on day to day: food and groceries, transport, snacks, mobile top-ups, small household items and treats. Rent, utilities, loan instalments and insurance are not daily decisions, so they come out before you calculate. That way the number you see is genuinely free to spend.
Worked examples
Example 1: monthly salary
It’s the 17th and your salary arrives on the 30th: 13 days to go, counting today. You have 2,400 across your accounts and cash. Still to pay: 600 in bills and a 200 loan instalment. You want to save 300 this month.
(2,400 − 600 − 200 − 300) ÷ 13 = 1,300 ÷ 13 = 100 per day.
Example 2: paid every week
Paid 700 every Friday, with 250 set aside for bills and 50 for savings each week. That leaves 400 over 7 days: 57 per day. Many weekly earners prefer to think of this as a weekly spending allowance of 400 instead.
Example 3: irregular income
If your income changes every month, don’t base the daily number on a good month. Use your lowest normal month, or pay yourself a fixed amount from a holding account. Our guide to budgeting with irregular income shows how.
Divide by 30, or by the days actually left?
You’ll see two approaches. Dividing your monthly spending money by 30 gives a fixed daily amount that’s easy to remember. Dividing what you have now by the days actually left gives a number that adjusts itself every day. The second one is more honest: if you overspent yesterday, today’s number is a little lower; if you were careful, it’s a little higher. That self-correction is what makes it work.
How much should I spend per day on food?
Food is usually the biggest part of daily spending, so it’s a common question. Rather than copying an average from another country or city, look at what you actually spent on groceries and meals over the last two weeks, divide by 14, and compare it with your daily budget. If food alone takes most of the number, that’s the first place to look: cooking a few more meals at home, a shopping list, and fewer deliveries usually make the biggest difference.
What happens if you go over (or under)?
- Over: don’t panic and don’t give up. Recalculate tomorrow; the overspend is spread across the remaining days.
- Under: the unspent money rolls into tomorrow. At the end of the week you can let it ride, or move some to savings.
- Zero or negative: your commitments are bigger than your money until payday. Check which bills can move, reduce this month’s savings rather than borrowing, and read why money runs out before payday for the deeper causes.
Why a daily number beats a monthly budget
A monthly budget tells you that you overspent after the month is over. A daily number tells you while you can still do something about it. It answers the question you actually have at the shop (“can I buy this now?”) and it’s forgiving: one expensive day just makes the next few a little tighter.
How to stick to your daily limit
- Recalculate every morning with your real balance, or use an app that updates as you record purchases.
- Record each purchase as you make it. If it takes more than a few seconds, you’ll stop doing it.
- Plan the expensive days. If the weekend is always pricier, keep a little back on weekdays.
- Set your number on payday as part of a payday routine, so the month starts with a plan.
Frequently asked questions
How do I calculate how much I can spend per day?
Subtract bills, debt payments and savings due before payday from the money you have now, then divide by the number of days until payday. Round down.
Should my daily budget include rent and bills?
No. Take rent, bills and loan payments out first. The daily budget covers day-to-day spending such as food, transport and small purchases.
What if I do not spend my full daily budget?
The unspent amount rolls into the following days, raising your daily limit slightly. You can also move some of it to savings at the end of the week.
This guide is general information, not personal financial, legal or tax advice. How we write and check our guides.