Rent to Income Ratio Calculator: Housing Share of Pay
Work out the share of your monthly income that goes to rent — the figure most landlords screen on, and the one that decides how much breathing room the rest of your budget has.
Adjust the inputs and select Calculate for a full breakdown.
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | Rent to income ratio | Income left for everything else |
|---|---|---|
| $1,500 rent · $5,000 income | 30.00% | 70.00% |
| $900 rent · $3,200 income | 28.13% | 71.88% |
| $2,800 rent · $7,500 income | 37.33% | 62.67% |
| $1,200 rent · $3,000 income | 40.00% | 60.00% |
How This Calculator Works
Enter monthly rent and gross monthly income. The calculator divides one by the other and multiplies by 100 to give the rent to income ratio, with the share left over for everything else shown alongside.
The Formula
Part as a Percentage of a Whole
Part is the portion, Whole is the total it belongs to
Worked Example
Paying $1,500 of rent on a $5,000 gross income is a 30% rent to income ratio — the classic rule-of-thumb threshold. The remaining 70% has to absorb taxes, food, transport, debt service, and saving, which is why ratios above 30% squeeze quickly.
Key Insight
The 30% rule treats rent and income equally, but it tilts hard against lower earners — 30% of a $30,000 income leaves $21,000 a year for everything else; 30% of a $200,000 income leaves $140,000. A more honest read uses net income (after tax) and accounts for non-housing fixed costs before declaring 30% sustainable.
Why the 30% rule no longer fits most renters
The '30% rule' originated from federal housing policy research in the 1960s when housing was relatively affordable. Today, half of U.S. renters spend 30%+ of income on rent (cost-burdened); ~25% spend 50%+ (severely burdened). HUD considers this a crisis but the standard remains 30%.
Major metros are far above 30%. NYC, San Francisco, Boston median renters spend 35-45% of income on rent. Even moderate markets like Atlanta, Denver, Seattle exceed 30%. Only in lowest-cost markets (Houston, Indianapolis, Memphis) do typical renters spend under 30%.
For renter decision-making: 30% is aspirational; 35-40% is realistic in expensive markets without major lifestyle compromise. Above 50% is the 'severe burden' threshold — at this level, renters typically cut food, healthcare, transportation, or savings to make rent. This creates fragility — one missed paycheck or unexpected expense triggers eviction risk.
Landlord 3× rule and qualification math
Most U.S. landlords require gross income ≥ 3× monthly rent (equivalent to 33% ratio). For $2,000/month apartment: landlord requires $6,000/month ($72,000/year) in income. Some Class A new construction requires 4× ($96,000 for same apartment). Section 42 (LIHTC) housing has income ceilings but no ratio requirements.
For applicants below 3× threshold: (1) GUARANTOR — qualified relative or service (Insurent, Rhino) can guarantee rent for fee; (2) MULTIPLE MONTHS UPFRONT — paying 3-6 months in advance reassures landlord (legal in some states, restricted in CA, NY); (3) HIGHER DEPOSIT — some landlords accept 1.5-2× standard deposit instead of 3× income requirement.
For applicants well above 3× (5×+): typically zero qualification friction. Property managers prefer high-income tenants for stability and convenience. In tight rental markets, landlords may select among multiple qualified applicants based on additional factors (employer prestige, lease length willingness, credit score).
U.S. rent-to-income ratios — typical scenarios
Reference rent-to-income ratios by household scenario.
| Scenario | Typical rent share | Affordability category |
|---|---|---|
| Affluent earner ($150K+) | 15-22% | Comfortable |
| Median U.S. renter household | 30-32% | Cost-burdened (HUD definition) |
| Urban professional in major metro | 35-40% | Stretched but manageable |
| Low-income urban worker | 40-50% | Severely cost-burdened |
| Extremely low income (<$30K) | 50-70%+ | Crisis level |
| HUD voucher tenant (Section 8) | 30% of income capped | HUD subsidy fills gap |
Median U.S. renter is above the 30% affordability threshold. This isn't a personal failure — it reflects structural mismatch between U.S. wage growth (slow) and rent growth (fast) since 2000. Federal policy response (housing voucher expansion, LIHTC) has been incremental relative to scale of problem.
Frequently Asked Questions
How is rent to income ratio calculated?
Divide monthly rent by gross monthly income and multiply by 100. A $1,500 rent on $5,000 of income is a 30% rent to income ratio.
Is 30% really the right cap?
It is a rule of thumb that has held since the 1960s, but it works better for middle incomes than for low ones. Below median income, even 25% can be tight; above it, 35% may be comfortable.
Should I use gross or net income?
Landlords almost always screen on gross. For a personal budget, net income gives a much truer read — what you actually have left after rent.
What about household income?
If rent is shared, use combined household income. If income is yours alone but rent is split, divide the rent by your share, not the full bill.
Do utilities count as rent?
Strictly no, but practically yes for budgeting. Many cost-of-housing measures include utilities and trash, which can lift the effective rent-to-income figure by several percentage points.
When is this calculator unreliable?
When using gross income vs net (take-home) — gross is the standard for landlord qualification, but actual affordability is determined by net after taxes and deductions. Also unreliable when comparing across cost-of-living-adjusted markets (35% rent in low-COL Houston ≠ 35% in NYC), or when household has substantial non-rent expenses (childcare, healthcare, debt payments significantly affect affordability beyond rent share).
References & Authoritative Sources
- U.S. Department of Housing and Urban Development (HUD) — Housing Cost Burden Definitions · consulted June 1, 2026 · Federal definition of housing affordability
- Joint Center for Housing Studies — Harvard — State of the Nation's Housing Report · consulted June 1, 2026 · Annual U.S. housing affordability research
- Apartment List Research — U.S. Rent Reports · consulted June 1, 2026 · Industry source on U.S. rental market
Related Calculators
Methodology & Review
Rent-to-income ratio equals monthly rent / monthly gross income × 100. The calculator returns the percentage. U.S. landlord standard: rent should be ≤ 30% of gross income (the '30% rule' from 1969 federal housing affordability research). HUD defines housing cost burden as 30%+ of income; severe burden as 50%+. Modern U.S. rents have outpaced wages, with 2024 national median rent at ~30-32% of median renter household income. RELIABILITY: Reliable for direct ratio calculation using gross income. Less reliable as a 'will I be approved' indicator (landlord standards vary: some accept 2.5× rent in income, others require 3×; major markets often have stricter requirements), or for cost-of-living-adjusted affordability (a 35% ratio in low-cost-of-living Houston may be more affordable than 25% in NYC).
Updated