Online Monthly Budget & Expense Calculator (Free)

Do you know exactly where last month’s salary went? Most of us can name our income to the dollar. The expenses side is usually a blur, and that blur is where savings quietly disappear. This free calculator works out your take-home income, adds up your monthly expenses, and shows you the number that actually matters: how much cash you have left each month, and where the rest of it went.

If you prefer working in a spreadsheet, FinSnap, our free template, tracks your income and expenses alongside your net worth, insurance, and the rest of your financial picture in one file.

How to Use This Income and Expense Calculator

Start with your monthly gross salary, and the calculator works out your take-home pay after your employee CPF contribution. For most Singaporeans and PRs below 55, the contribution rate is 20%. If you’re between 55 and 65, your rate is lower but has been rising in yearly steps under the government’s schedule for older workers, so check your latest payslip. Foreigners don’t contribute to CPF, so enter 0%. You can find the full breakdown in our guide to CPF contribution and allocation rates.

One number worth knowing: employee CPF contributions are only payable on the first $8,000 of monthly salary as of January 2026. This Ordinary Wage ceiling has been raised in phases over the past few years, as CPF Board’s contribution rules set out:

So if you earn above $8,000 a month, everything beyond the ceiling reaches your bank account untouched by CPF.

After income, fill in your intended monthly savings, then your expenses. Two tips to make the numbers honest:

• Convert annual costs into monthly ones. Income tax, insurance premiums paid yearly, road tax, and holidays all belong in the calculator at one-twelfth of their annual amount. Leaving them out is the most common reason a budget looks healthier than it is.
• Estimate from your statements, not memory. Pull up last month’s bank and card statements and go through them line by line. Memory flatters us. Statements don’t.

What Your Results Mean

Cash remaining = take-home income – intended savings – total expenses.

If the number is comfortably positive, you have slack. That’s money you can point at your savings targets or investments before it drifts into more lifestyle spending.

If it’s near zero, your budget balances but has no buffer. One surprise bill, a hospital visit, a retrenchment, and the whole month tips over.

If it’s negative, you’re spending more than you earn, and the gap is being financed by past savings or debt. That’s uncomfortable to see in black and white, but seeing it is the point. You can’t fix what you haven’t found, and the breakdown chart below the calculator shows exactly which category is the problem.

Save First, Spend What’s Left

Here’s how most people save: income comes in, spending happens, and whatever survives the month gets saved. Often, nothing survives.

Flip the order and everything changes. When your salary arrives, a fixed amount moves to savings first, and you spend what’s left. The savings happen by structure, not willpower.

A simple way to set this up is with three bank accounts:

• Account A: where your salary is credited
• Account B: purely for savings and money waiting to be invested
• Account C: purely for daily, monthly, and annual expenses

When income lands in A, a standing instruction automatically moves your savings amount to B, and your spending money to C. No monthly decision, no negotiation with yourself. Two accounts work too, if three feels like overkill.

Your first savings priority should be an emergency fund covering three to six months of the expenses this calculator just totalled up for you.

How Does Your Spending Compare?

Resident households in Singapore spent an average of $5,931 a month on goods and services in 2023, up from $5,163 in 2017/18, or about 2.8% a year, based on the Household Expenditure Survey 2023. The same survey put average monthly household income from all sources at $15,473 in 2023.

Put those two together and the average household spends roughly 38 cents of every gross dollar it receives. Before you conclude that everyone else is saving 62%, note that the income figure is measured before CPF contributions and income tax, so the true spendable ratio is a good deal tighter. Still, if your expenses are consuming most of your take-home pay, the average household is running leaner than you are.

Two caveats when comparing. These are household figures, so if you live alone, your total should sit well below them. And SingStat runs this survey roughly once every five years, so 2023 remains the latest word until the next round. For the fuller picture of what Singaporeans pay for housing, food, and transport, see our cost of living statistics, and for where people admit the money goes, our own spending habits survey is candid reading.

The 50/30/20 Rule, Applied to Your Numbers

The breakdown chart under the calculator sorts your take-home income into savings, necessities, wants, and others. That maps neatly onto the 50/30/20 rule: no more than 50% of take-home pay on needs, up to 30% on wants, and at least 20% saved or invested.

Check your chart against those three lines. If necessities are eating 65% of your take-home pay, the problem usually sits in one or two big fixed costs, most often housing or the car, rather than a hundred small ones. If wants are the culprit, the fix is cheaper but requires more honesty.

Treat the rule as a guide, not a law. A young family with a new flat and a newborn may run needs at 60% for a few years, and that’s temporary, not a failure. The direction matters more than the split in any single month, and our guide on how to budget money covers ways to bring the ratios back in line over time.

4 Ways to Improve Your Monthly Position

Earn more. Your income drives the whole calculation, and investing in your career usually beats squeezing another $50 out of the grocery bill. Take on visible responsibilities, upskill through courses, and think deliberately about your next career move.

Protect more. Insurance looks like just another expense row in the calculator, but it’s the row that stops one bad event from destroying all the others. If illness or disability took your income away tomorrow, every other line in your budget would still arrive on schedule. Our life insurance calculator works out how much cover your income needs, and a hospital stay is far less damaging when medical insurance picks up the bill instead of your savings. Getting the right cover in place is worth doing properly, and adequate insurance protection is one of the four pillars we review with every client.

Save more. Go through each expense in the calculator and make one of three decisions: keep it, find a cheaper alternative, or cut it. A limited spending account (Account C above) does the enforcement for you, because once the month’s money runs low, the mental resistance to unbudgeted purchases becomes automatic.

Invest more. Cash beyond your emergency fund and near-term commitments loses purchasing power to inflation every year it sits idle. Putting it to work in investments suited to your risk tolerance lets compounding do a growing share of the work, especially over the decades between now and retirement.

You’ve Just Filled In One Tab of the Full Picture

Working out your income and expenses is the first sheet of a proper financial snapshot, but it’s only one of them. Your cash flow says nothing about whether your insurance would hold up, how your net worth is trending, or whether your retirement savings are on track.

That’s exactly what our free financial snapshot template, FinSnap, is built for. The Income & Expenses sheet captures what you’ve just done here, and the remaining sheets cover your assets and liabilities, insurance policies, goals, and estate information, all in one file that stays with you. If you only have ten minutes, start with the sheets you already have numbers for, and the picture builds from there.

A good companion step is our net worth calculator, which handles the assets-and-liabilities side the same way this page handles cash flow. And when you’re ready to put the pieces in order, our seven-step guide to personal financial planning in Singapore shows what to tackle first.

If you’d rather have a professional walk through the full picture with you, our comprehensive financial planning session reviews your cash flow, insurance, and investments together, at no cost to you.