What percentage of your income goes on rent, and is that normal?

The standard HUD definition uses gross income (before tax). However, many financial planners argue that using net (after-tax) income is more practically meaningful, since you can only spend what you actually receive. If you use net income, a 30% gross income threshold roughly corresponds to a 22–25% net income threshold for median earners, depending on tax rates. Some advisors use 25%–30% of net take-home pay as the target. The calculator uses gross income to match the HUD definition and the national median figures, which are also gross-income based.

HUD defines severely rent burdened as spending 50% or more of gross household income on housing costs. At this level, the residual income left for food, healthcare, transportation, and other necessities is typically insufficient for a basic standard of living at lower income levels. The ACS 2023 data shows approximately 10.7 million US renter households, around 25% of all renter households, are severely rent burdened. The rate is highest among the lowest income quintile, where it exceeds 50%.

Multiple mechanisms link rent burden to poor mental health. Financial stress from housing costs reduces discretionary spending, creates anxiety about housing security, and can lead to missed bill payments and debt accumulation, all of which are independently associated with depression and anxiety. The longitudinal evidence from Denary et al. (2021) found that the association between burden and clinical anxiety held after controlling for income level, meaning it is not solely a proxy for poverty. Housing instability, the fear of eviction or the experience of moving frequently, has additional psychological costs. Research consistently finds that renters have worse average mental health outcomes than homeowners, with the gap widening at higher levels of rent burden.

In the US, Miami has the highest median rent-to-income ratio among major cities at approximately 36%, followed by Los Angeles and San Francisco. New York City’s ratio is lower than many expect (around 28.7%) partly because median incomes in the city are also high, though this conceals extreme variation by neighbourhood and income level. In the UK, London’s borough-level data shows Kensington and Chelsea at 74.3% and Westminster at over 60%. Outside London, most UK local authority areas are below 30%. The worst rent burden internationally tends to be found in cities with a combination of housing supply constraints and fast-growing demand from high-income in-migration, including Hong Kong, Sydney, and Vancouver alongside the US and UK examples above.

The widely cited guideline is 30% of gross income, a threshold established by the US Department of Housing and Urban Development (HUD) in 1981. Households spending more than 30% are classified as "cost burdened." However, this figure was based on housing costs and incomes from the early 1980s. The Joint Center for Housing Studies at Harvard notes that in 2023, nearly half of all US renters exceeded this threshold, raising questions about whether the benchmark reflects current economic reality.

HUD defines a household as "cost burdened" when housing costs exceed 30% of gross household income, and "severely cost burdened" when they exceed 50%. The 2024 State of the Nation's Housing report from Harvard's Joint Center for Housing Studies found that 22.4 million renter households in the US were cost burdened in 2022, and about 12 million of those were severely cost burdened. These categories are used to determine eligibility for federal housing assistance programmes.

Using the 30% gross income rule, a $50,000 annual salary translates to a maximum rent of about $1,250 per month. If you calculate from net (after-tax) income instead, which many financial planners recommend, the figure drops to roughly $1,000 to $1,100 depending on your tax situation and state. The National Low Income Housing Coalition's 2024 Out of Reach report found that a full-time worker needs to earn approximately $28.58 per hour (about $59,400 annually) to afford a modest two-bedroom apartment at fair market rent nationwide.

Many housing economists argue yes. The 30% threshold was set in 1981 when other costs like healthcare, childcare, and student loans consumed a smaller share of household budgets. A 2023 analysis by the Brookings Institution noted that the rule fails to account for income level: spending 30% on rent is far more burdensome for a household earning $30,000 than one earning $100,000, because the remaining dollars cover very different amounts of necessities. Some researchers advocate for a residual income approach that measures whether a household can afford basic needs after paying rent, rather than using a fixed percentage.