Use the exact same 40x Rule that US landlords use. Get your Lease Readiness Score, prorated rent, roommate split & 5-year forecast — all free.
Enter your income above and click Calculate to see your personalized rent budget, Lease Readiness Score & PDF report.
Enter the apartment's rent and your income to instantly check if you meet the landlord's 40x income requirement.
Moving in mid-month? Only pay for the days you actually live there. Don't overpay!
Enter your monthly rent and move-in date to see exactly how much you owe for a partial month.
Split rent fairly between 2–4 roommates including utilities.
Enter the total rent and number of roommates to see everyone's fair monthly share including utilities.
See how your rent will grow over time with annual increases. Plan ahead!
Enter your current rent and expected annual increase to see a year-by-year forecast with chart.
Our rent calculator uses the same formulas that US landlords, financial planners, and real estate experts rely on every day.
Input your annual gross salary (and co-applicant's if applicable) plus monthly debt payments.
The calculator applies the 40x Rule (landlord standard), 30% Budget Rule, and DTI ratio check.
Get your Lease Readiness Score (0–100%), zone meter (Safe/Caution/Danger), and budget breakdown.
Save your personalized rental report as a PDF to share with roommates or keep for your records.
Each tab has different inputs. Click a tool below to see exactly what to enter and why.
This is the standard US landlord requirement. Your annual gross income must be at least 40 times the monthly rent. This protects landlords from tenants who can't afford consistent payments.
Example: $80,000 income ÷ 40 = $2,000/mo max
Financial planners recommend spending no more than 30% of your gross monthly income on rent. This leaves room for savings, debts, and unexpected costs.
Example: $5,000/mo × 30% = $1,500/mo
A complete budget framework: 50% of after-tax income for needs (including rent), 30% for wants, and 20% for savings and debt payoff.
Rent should ideally be ≤ 30% so other needs fit within the 50%
Move in on the 15th? You only pay for the days you occupy the unit. Your landlord must charge you the daily rate, not the full month.
$2,100 ÷ 31 × 12 days = $812.88 (not $2,100!)
Debt-to-Income ratio is how landlords assess risk. Your total monthly obligations (rent + all debts) should be under 43% of gross income.
High DTI means higher chance of rejection
US rents increase by 3–5% annually on average. An escalation clause in your lease means your 2nd-year rent will be higher. Plan ahead with our forecast tool.
$1,800 at 4%/yr → $2,190/mo in 5 years
Static data compiled from HUD Fair Market Rent data and real estate market reports. Use as a reference benchmark.
| City | Studio | 1-Bed | 2-Bed | 3-Bed |
|---|---|---|---|---|
| New York, NY | $3,200 | $3,800 | $5,500 | $7,000 |
| San Francisco, CA | $2,400 | $3,000 | $4,200 | $5,500 |
| Los Angeles, CA | $1,800 | $2,400 | $3,200 | $4,500 |
| Boston, MA | $2,000 | $2,800 | $3,600 | $4,800 |
| Miami, FL | $1,900 | $2,500 | $3,500 | $5,000 |
| Chicago, IL | $1,600 | $2,100 | $3,000 | $4,000 |
| Seattle, WA | $1,700 | $2,300 | $3,100 | $4,200 |
| Washington, DC | $2,100 | $2,700 | $3,800 | $5,200 |
| Austin, TX | $1,400 | $1,700 | $2,400 | $3,200 |
| Houston, TX | $1,100 | $1,400 | $1,800 | $2,400 |
| Dallas, TX | $1,200 | $1,550 | $2,100 | $3,000 |
| Denver, CO | $1,500 | $1,950 | $2,600 | $3,500 |
| Atlanta, GA | $1,300 | $1,700 | $2,300 | $3,200 |
| Phoenix, AZ | $1,100 | $1,450 | $1,900 | $2,600 |
| Nashville, TN | $1,400 | $1,800 | $2,500 | $3,400 |
| Portland, OR | $1,400 | $1,850 | $2,500 | $3,300 |
| Minneapolis, MN | $1,150 | $1,550 | $2,100 | $2,900 |
| San Diego, CA | $1,950 | $2,650 | $3,500 | $4,600 |
| Charlotte, NC | $1,250 | $1,600 | $2,200 | $2,950 |
| Las Vegas, NV | $1,050 | $1,350 | $1,850 | $2,500 |
Source: HUD Fair Market Rent & real estate market benchmarks, Q4 2025.
Everything you need to know about the 40x rule, prorated rent, and finding the perfect apartment without going broke.
The most common question renters ask is: "How much rent can I afford?" While it sounds simple, the answer depends on your gross income — the money you earn before taxes.
In the USA, especially in competitive markets, landlords use the 40x Rule — the standard rent calculator for landlord approvals. They want your annual salary to be at least 40 times the monthly rent. This ensures you have enough buffer to pay for utilities, food, and emergencies.
If you find an apartment for $2,500 but earn $80,000, a landlord might reject your application or ask for a Guarantor — someone who earns 80x the rent and signs the lease with you.
While landlords use the 40x rule, financial planners suggest the 30% Rule — your rent should stay below 30% of your monthly gross income. This is the "Safe" zone in our calculator.
This leaves $3,500 for everything else — following the 50/30/20 budget plan (50% needs, 30% wants, 20% savings).
One of the most searched rental topics in the US is the prorated rent calculator. This is essential if you're moving in on any day other than the 1st of the month. Landlords should only charge you for the days you actually have the keys.
Many people think renting is "throwing money away," but that's a misconception. Renting provides flexibility. When you rent, you're not responsible for a $10,000 roof repair or property taxes. For people staying in a city for less than five years, the high closing costs of buying a home usually make renting the smarter financial move.
US rent prices rarely stay the same. Many leases include an "escalation clause." In most US states, rent increases 3–5% annually. Use our Forecast tool to predict your future rent costs:
A rent calculator only tells part of the story. In the USA, "Rent" is just the base price. Budget for these additional costs:
Usually 1 month's rent. Up to 2 months if your credit is low.
Extra $25–$75/month if you have a pet, plus a one-time pet deposit.
$15–$30/month. Most US landlords require this before move-in.
$50–$100 per application. You pay this even if rejected.
Landlords don't just look at your income — they assess your full financial picture through the Debt-to-Income (DTI) ratio. Even with $100,000 income, $2,000/month in car payments and student loans puts you in the "risky" category. They want your total obligations (including rent) under 43% of gross income.
| Annual Income | 40x Rule Max | 30% Safe Budget | Stretch Max |
|---|---|---|---|
| $30,000 | $750/mo | $750/mo | $900/mo |
| $40,000 | $1,000/mo | $1,000/mo | $1,200/mo |
| $50,000 | $1,250/mo | $1,250/mo | $1,500/mo |
| $60,000 | $1,500/mo | $1,500/mo | $1,800/mo |
| $75,000 | $1,875/mo | $1,875/mo | $2,250/mo |
| $100,000 | $2,500/mo | $2,500/mo | $3,000/mo |
| $125,000 | $3,125/mo | $3,125/mo | $3,750/mo |
| $150,000 | $3,750/mo | $3,750/mo | $4,500/mo |
| $200,000 | $5,000/mo | $5,000/mo | $6,000/mo |
On a $60,000 annual salary, the 40x rule and 30% rule both point to $1,500/month as your safe rent budget. If you have zero debt, you might push to $1,700/month, but $1,500 is the recommended safe zone that landlords and financial planners agree on.
The 40x rule is the standard US landlord income requirement. Your annual gross income must be at least 40 times the monthly rent. For a $2,000/month apartment, you need to earn at least $80,000/year. This rule protects landlords by ensuring tenants have adequate income buffer.
Our standard rent calculator does not include utilities. Add an extra 10–15% of your rent price to your budget for electricity, water, internet, and heating. For example, on a $1,500 rent, budget an additional $150–$225 for utilities.
Divide your monthly rent by the number of days in the month to get the daily rate, then multiply by the number of days you occupy the unit. Example: Moving in March 20th with $2,100 rent: $2,100 ÷ 31 = $67.74/day × 12 days = $812.88. Use our Prorated Rent tab above for instant calculation.
The 50/30/20 rule suggests: 50% of your after-tax income for needs (rent, utilities, groceries), 30% for wants (dining, entertainment), and 20% for savings and debt payoff. If your rent exceeds 35% of take-home pay, saving 20% becomes very difficult.
Yes, but you'll likely need a Guarantor (someone who earns 80x the rent and co-signs), a higher security deposit (often 2 months), or strong proof of savings. Some landlords accept "income from savings" if you have substantial funds in the bank to cover many months of rent.
Security deposits are typically 1 month's rent in most US states. However, if your credit score is below 650, landlords in many states can legally charge up to 2 months' rent as deposit. Some states like California cap it at 2 months for unfurnished apartments.
Landlords typically count: salary/wages, self-employment income (with 2 years of tax returns), Social Security benefits, pension income, alimony/child support, and rental income from other properties. Part-time job income, freelance income, and investment dividends may also be accepted with documentation.
Rent is charged per calendar month, not per 30 days. February (28/29 days) and March (31 days) cost the same monthly amount. However, prorated rent is calculated using the actual number of days in the specific month you're moving into.
Rules vary by state. Most states allow landlords to raise rent once per lease term with proper notice (usually 30–60 days written notice). Some cities like New York, San Francisco, and LA have rent control laws that cap annual increases. Check your state's specific tenant protection laws.