Rent Calculator — How Much Rent Can You Afford on Your Salary?
The oldest rule in renting says your rent should stay under 30% of your gross income.
Start from what you know
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The numbers
Every percentage, side by side
The 30% row is the classic rule; the others are the reality checks either side of it. The chart follows whichever direction you are calculating.
- The classic rule: rent should stay under 30% of gross income — on a $72,000 salary that is $1,800.00 a month, $21,600 a year.
- It runs backwards too: the income a rent demands is the rent divided by the percentage — a $1,500 rent at 30% needs a $60,000 salary.
- The 25% and 40% rows are the reality checks either side of the headline — the stricter the percentage, the more margin is left for everything else.
The oldest rule in renting says your rent should stay under 30% of your gross income. Enter a salary to see the rent it supports at every common percentage — or flip it around and find the income a rent demands.
Keep exploring
Three companion tools for the housing decision.
How it works
Three steps, either direction.
Pick a direction
Start from a salary and find the rent it carries, or start from a rent and find the salary it demands.
Enter the one number
An annual gross salary, or a monthly rent. Everything else is percentages of gross monthly pay.
Compare the rows
The 30% rule is the headline, but the 25% and 40% rows tell you what comfortable and stretched look like on your numbers.
The math behind the 30% rule
The rule is one multiplication. Gross monthly income is the annual salary ÷ 12, and the affordable rent is that figure times your chosen percentage: at the classic 30%, rent = (salary ÷ 12) × 0.30. Running it backwards, the income a rent requires is rent ÷ percentage — a $1,500 rent at 30% needs $5,000 a month gross, or $60,000 a year. The 30% figure itself comes from US housing policy: since the early 1980s, households paying more than 30% of gross income on housing have been officially classed as “cost-burdened”, and the rule of thumb renters use today is that definition turned into advice.
Worked examples:
| Question | Calculation | Answer |
|---|---|---|
| Rent on a $72,000 salary at 30% | $72,000 ÷ 12 = $6,000 · × 0.30 | $1,800.00/mo · $21,600 a year |
| Rent on a $50,000 salary at 30% | $50,000 ÷ 12 = $4,166.67 · × 0.30 | $1,250.00/mo |
| Income needed for a $1,500 rent at 30% | $1,500 ÷ 0.30 = $5,000/mo | $60,000/yr · at 28%: $64,285.71/yr |
A note on the backwards direction: the stricter the percentage, the more income the same rent demands. Holding a $1,500 rent to 25% of income needs a $72,000 salary; letting it run to 40% needs only $45,000. The rent does not change — your margin for everything else does.
Rent multiples: the 2.5× and 3× rules
The landlord’s screening test — what it asks, and how it meets the percentages above.
The percentages on this page are the renter’s view of affordability. Landlords run the same relationship from the other side, as a multiple: your gross monthly income must be at least 2.5× or 3× the monthly rent before an application is approved. It is a screening rule, not budgeting advice — a quick risk test a leasing office can apply from a payslip. (It is also what most people are hunting for when they search for a “2.5x rent calculator”: the multiple run in one direction or the other.)
The arithmetic is a single multiplication. For a $1,500 rent — the figure this calculator’s examples use — a 2.5× rule asks for $1,500 × 2.5 = $3,750 a month gross, or $45,000 a year. A 3× rule asks for $4,500 a month, or $54,000 a year. Stricter buildings and pricier markets sometimes set 3.5× — $5,250 a month, $63,000 a year, for the same apartment. The basis is almost always gross income before tax, and landlords differ on the details: some test the household’s combined income, some test each adult on the lease, and verified income from other sources may or may not count.
| Monthly rent | Income needed at 2.5× | Income needed at 3× |
|---|---|---|
| $1,200 | $3,000/mo · $36,000/yr | $3,600/mo · $43,200/yr |
| $1,500 | $3,750/mo · $45,000/yr | $4,500/mo · $54,000/yr |
| $1,800 | $4,500/mo · $54,000/yr | $5,400/mo · $64,800/yr |
| $2,200 | $5,500/mo · $66,000/yr | $6,600/mo · $79,200/yr |
Gross income a landlord’s multiple demands, by rent. Every row is rent × multiple × 12 for the yearly figure.
A multiple is a percentage wearing a disguise, which is how it meets the rest of this page. Rent at exactly 3× income is rent at 33.3% of gross income; at 2.5× it is 40%. So the two tests can be checked against each other in the calculator above: enter a $45,000 salary and the 40% row returns exactly $1,500 — the 2.5× pass mark, to the cent. Enter $54,000 and the same $1,500 rent falls between the 30% and 35% rows, where a 33.3% share has to live. And the tool’s “income I need” direction runs the identical test in percentage clothing: at the 30% rule it asks $60,000 for a $1,500 rent — stricter than either multiple, because 30% is a smaller share than 33.3%.
Passing the screen is not the same as affording the rent, and the gap between the two is exactly what the multiple cannot see. It counts one number — gross income — and nothing about debts, commuting costs, childcare or the deposit still to save. A renter can clear a 3× test and still be stretched thin, which is why the “left after rent and debts” row above is the renter-side check the landlord’s test skips. Read from the page’s default salary the contrast is plain: $72,000 a year ($6,000 a month) passes a 3× screen for any rent up to $2,000, and a 2.5× screen up to $2,400 — while the 30% rule caps that same salary at $1,800. The space between $1,800 and $2,400 is the difference between what a landlord will accept and what a budget will enjoy.
Go deeper
Where the rule comes from, and the other rule landlords actually enforce.
The percentage was never designed as budgeting wisdom — it started as a policy line and stuck:
- The origin: US housing programmes long used 25% of income as the tenant contribution; in 1981 it was raised to 30%, and “more than 30% of gross income on housing” became the federal definition of cost-burdened. Financial advice simply adopted the government’s line.
- Why gross, not net: the definition uses gross income, which is why the rule can feel generous — 30% of gross is often closer to 38–40% of take-home pay. Many advisers quietly apply 30% to net instead, which is much stricter.
- When breaking it is rational: in high-cost cities, spending 40% on rent while having no car payment, a short commute and no debt can be healthier than 28% on rent plus a car-dependent life. The rule counts rent only; your whole fixed-cost picture is what matters.
- The 50/30/20 cross-check: the popular budget framework gives all needs — rent, bills, transport, minimum payments — 50% of take-home. If rent alone eats the needs budget, something else has to give.
Your budget rule and the landlord’s screening rule are two views of the same fraction:
- The screening test: many landlords and letting agents require gross income of at least 3× the monthly rent — monthly income ≥ 3 × rent. For a $1,500 rent, that is $4,500 a month, or $54,000 a year.
- It is the 33.3% rule: income of 3× rent means rent is exactly one third — 33.33% — of gross income. The landlord’s pass mark is looser than your 30% comfort rule, by design: it tests whether you can pay, not whether paying is comfortable.
- The annual version: some agents ask for annual income of at least 40× the monthly rent — $60,000 for that $1,500 rent — which is the 30% rule exactly. If an agent quotes 40×, they are screening at your comfort line, not theirs.
- Sharing changes everything: with a partner or housemates, screening usually uses combined household income, while your personal rule should use your share of the rent against your own income. Run both versions before signing.
Rent by the day, week and month
The same rent, expressed three ways. Convert through the year, never through 4 weeks.
Rent is quoted by the month in most of the United States, by the week in much of the United Kingdom and Australia, and by the day for short lets. Converting between them is one rule: go through the year. A monthly rent times 12 is the annual rent; divide the annual rent by 52 for the weekly figure, and by 365 for the daily figure. A $1,800 monthly rent is $21,600 a year, $415.38 a week, and about $59.18 a day. The shortcut of multiplying a weekly rent by 4 understates the month, because most months have more than four weeks: the correct monthly figure from a weekly rent is the weekly rent times 52, divided by 12. At $415.38 a week that gives $1,800 a month, as it must.
Rent per square foot works the same way: monthly rent divided by the area. A $1,800 rent for 750 square feet is $2.40 per square foot per month. The figure is only comparable when both the rent and the area are measured the same way: gross rent including the same bills, and area measured on the same basis. A rent that includes utilities cannot be compared per square foot with one that does not, and a price per square foot that mixes monthly and annual figures is a trap, not a comparison.
| Monthly rent | Annual rent | Weekly rent | Daily rent |
|---|---|---|---|
| $1,200 | $14,400 | $276.92 | $39.45 |
| $1,500 | $18,000 | $346.15 | $49.32 |
| $1,800 | $21,600 | $415.38 | $59.18 |
| $2,100 | $25,200 | $484.62 | $69.04 |
Sharing a rent fairly
Equal shares are fair only when the rooms are equal. Otherwise, split by the room.
Roommates usually split rent one of two ways: equally, or by room size. An equal split is fair when the rooms, bathrooms and storage are roughly equal: three people sharing a $1,800 rent pay $600 each. When one room is clearly larger, has its own bathroom, or takes the parking space, an equal split quietly overcharges the person with the smallest room. The fairer method is to split in proportion to private space: each person’s share is the total rent times their room’s share of the total private area. Three rooms of 200, 150 and 120 square feet total 470 square feet, so the shares of a $1,800 rent are $765.96, $574.47 and $459.57. Shared space, the living room and kitchen, is already in the rent everyone pays for, so it is not split separately; only the private rooms drive the shares.
Agree the split before moving in, and agree what else is shared: utilities, internet, and household supplies, split equally unless one person’s use is clearly different. The deposit and the first month’s rent are the other upfront costs, and they are separate from the monthly split: a deposit is money held against damage and unpaid rent, usually returned at the end of the tenancy if the property is left as agreed, while the first month’s rent is simply the first month paid in advance. Both vary by landlord and by place, so confirm the amounts and the return conditions in writing before paying anything. A rent-increase question belongs to the companion article linked below: increases are worked out from the current rent and the percentage or amount in the notice, and whether any cap applies depends on the lease and the local rules where the property is.
Frequently asked questions
Quick answers about rent and income.
How much rent can I afford on a $72,000 salary?
At the classic 30% rule, $1,800 a month: a $72,000 salary is $6,000 a month gross, and 30% of that is $1,800. If you want more breathing room, the 25% row gives $1,500; if your other costs are unusually low, 35% stretches to $2,100. A year at the 30% rent totals $21,600.
What is the 30% rule for rent?
The guideline that housing should cost no more than 30% of gross income. It comes from US housing policy, where paying more than 30% of gross income on housing defines a household as cost-burdened. As personal advice it is a ceiling, not a target — paying 22% is not a problem the rule is trying to fix.
How much income do I need for $1,500 rent?
At the 30% rule, $60,000 a year gross — $1,500 ÷ 0.30 = $5,000 a month. A landlord using the looser 3× screening rule would accept $54,000. At a stricter 28% the same rent needs $64,285.71 a year, and at 25% it needs $72,000.
Should the 30% be calculated on gross or net pay?
The original rule — and landlord screening — use gross pay, before tax. But rent is paid out of net pay, so 30% of gross can be 38–40% of what actually lands in your account. If taxes and deductions take a big bite, run the percentage on your take-home instead and treat the answer as your real ceiling.
Does the 30% rule include utilities and other housing costs?
In its official form, the cost-burden definition counts rent plus utilities. In everyday use, most people apply it to rent alone and let bills live elsewhere in the budget — which quietly makes the rule looser. If your utilities are steep or not included in the rent, compare rent-plus-bills against the percentage instead.
What percentage of income do renters actually pay?
More than the rule suggests. Roughly half of US renter households are classed as cost-burdened — paying over 30% of gross income on housing — and about a quarter pay over half. High-cost cities and lower incomes push the share up regardless of intentions, which is why the rows up to 40% exist here: as a description of reality, and a prompt to protect the rest of the budget when rent runs hot.
How do I calculate a rent increase?
Multiply the current rent by one plus the increase as a decimal. A $1,500 rent rising by 3% becomes $1,500 times 1.03, which is $1,545. The increase itself is $45. To find the percentage from two rents, divide the difference by the old rent: a rise from $1,500 to $1,545 is $45 divided by $1,500, which is 3%.
How much can my landlord increase my rent?
It depends on the lease and on the rules where the property is. Some places cap increases, some require a minimum notice period, and some set neither, leaving the increase to the lease and the market. Check the lease first, then the official rules for the state, province or country the property is in, and do not rely on a figure quoted for a different place.
How do I split rent with roommates?
Split equally when the rooms are roughly equal. When they are not, split by private room size: each share is the total rent times that room’s share of the total private area. Agree the split, the utility split, and the payment date in writing before moving in, so the argument does not happen monthly.
How do I convert a weekly rent to a monthly rent?
Multiply by 52 and divide by 12. A weekly rent of $415.38 becomes $415.38 times 52 divided by 12, which is $1,800 a month. Do not multiply by 4: most months have more than four weeks, so the four-week shortcut understates the month.
Related guides
How rent rises are worked out, and where caps apply.
Related calculators
More tools for pay and housing.
Disclaimer
This calculator is for information only and is not financial advice. Percentage-of-income rules are blunt guidelines: they ignore local housing markets, taxes, debts, household size and the rest of your fixed costs, any of which can make a “rule-compliant” rent unaffordable or a higher one sensible. Landlord screening criteria vary by landlord, city and country. Decide with your full budget in view, not a single percentage.