Budget planner
Daily Spending Limit Calculator
Find out how much you can spend today, track what you have spent and see how to pace the rest of your budget.
Budget and period
Deductions
Money that is already spoken for. It is taken off before your daily limit is worked out.
No deductions yet. Add the costs you must pay this period, or skip this step.
Spending categories
Optional. Give a category a share or an amount to see when you go over it.
Preferences
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Record an expense
Expense records
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Save this calculation
Calculation history
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Keep your budget and expenses on your account so you can open them on another device.
Your data
Your budget and expenses are stored in this browser. You can back them up to a file or erase them here.
What is a daily spending limit?
A daily spending limit is the amount of money you can spend each day and still finish the period with your budget intact. Instead of watching a monthly total that feels far away, you get one clear number for today. It turns a budget into a habit you can follow.
What this calculator does
The Daily Spending Limit Calculator takes the money you have for a period, removes the costs that are already committed, sets aside a small safety reserve and divides the rest across the days of the period. It shows how much you can spend today, how much you have already spent, how much of the budget is left and how to pace the remaining days.
It also works as a simple expense tracker. When you record what you spend, the limit for each remaining day is recalculated, so the plan always reflects what has really happened. Charts, tables and reports show where the money goes, whether you are ahead or behind, and how the period is likely to end.
How the calculation works
- Total budget = money for the period + any amount carried over.
- Net available budget = total budget − fixed costs, bills, planned expenses and savings.
- Spendable budget = net available budget − the safety reserve.
- Daily limit = spendable budget ÷ number of days in the period.
- Updated daily limit = (spendable budget − spent so far) ÷ days remaining, including today.
- Safe to spend today = today's limit − what you have already spent today.
The weekly limit is the daily limit multiplied by 7 and the monthly equivalent uses an average month of 30.44 days. You can also give weekend days a larger share if that matches how you spend.
Worked example
Suppose you have 3,000 for a 30-day month. Rent and bills come to 1,300, you save 10% (300) and you keep a 5% reserve. Net available money is 1,400, the reserve is 70 and your spendable budget is 1,330. Your starting daily limit is 44.33. After ten days you have spent 500, so 830 is left for 20 days and your new daily limit is 41.50.
How to use the calculator
- Choose your currency and budget period, then enter the total money you have.
- Add deductions such as rent, bills, loan payments and savings.
- Optionally set up spending categories and a safety reserve.
- Press the calculate button to see your limits, charts and daily schedule.
- Record expenses in the Expenses tab and watch your limit adjust.
What results you get
- Daily, weekly, monthly and whole-period spending limits.
- The amount that is safe to spend today and what is left in the budget.
- Average daily spending, spending pace and a projected balance at the end of the period.
- A limit for every remaining day, with warnings when you are close to or over budget.
- Reports by day, week, month and category, with the highest and lowest spending days.
Tips for sticking to your limit
- Record expenses the same day, while you still remember them.
- Keep a small reserve for surprises instead of planning to the last coin.
- If you often overspend on weekends, give weekends a larger share and weekdays a smaller one.
- Check the category report once a week to find the one area that moves the most.
- Use unused money to build savings, not to raise tomorrow's limit.
Frequently asked questions
How is my daily spending limit calculated?
The calculator starts with the money you have for the period, adds anything carried over, and subtracts your fixed costs, bills and savings. A small safety reserve is set aside, and what remains is divided across the days of the period. As you record expenses, the limit for the remaining days is recalculated automatically.
Why does my daily limit change after I spend money?
The remaining budget is spread across the days that are left. If you spend less than your limit, the extra is shared across the remaining days and your limit goes up. If you spend more, it goes down. You can also choose to keep the daily limit steady and track the unused money separately.
What should I enter as my total budget?
Enter the money you can use during the period: your income, your allowance, or the amount you have set aside. Then list the costs that are already committed, such as rent, loan payments, bills and savings. Those are deducted before the daily limit is worked out.
What is the safety reserve?
It is a percentage of your net available money that the calculator keeps out of your spendable budget. It protects you from small surprises. Set it to zero if you do not want a reserve.
Can I plan for a week, a month or my own dates?
Yes. Choose a day, week or month, or set a custom start and end date such as the days between two paydays. The tool shows the daily, weekly, monthly and whole-period spending limits side by side.
What does weekend weighting do?
If you spend more on Saturdays and Sundays, you can give weekend days a larger share of the budget. A value of 1.5 means each weekend day gets one and a half times the allowance of a weekday.
Does the tool work with my currency?
Yes. Pick from a long list of world currencies. Amounts are formatted for your currency, including currencies that do not use decimals.
Where is my data stored?
Your budget and expenses are kept in your own browser. Your numbers are sent to the server only to run the calculation, and they are not stored there unless you choose to save a result to your account. You can reset everything at any time.
Can I export my report?
Yes. You can download daily, weekly, monthly, category, expense and summary reports as CSV or JSON, or open the print view and save the page as a PDF.
What happens when the period ends?
With automatic period reset switched on, the next period starts on its own, and you can carry unused money forward. Old expense records are archived so a new period starts clean.
Is this financial advice?
No. The results are estimates based on the numbers you enter. Use them as a guide for everyday budgeting, and speak to a qualified adviser for decisions about debt, tax or investments.