Rent-to-income ratio is one of the fastest ways to assess affordability stress.
Formula
Rent-to-income = (Monthly rent ÷ Gross monthly income) × 100
Interpretation Bands
- Under 25%: generally comfortable
- 25% to 30%: acceptable but watch budget creep
- 30% to 40%: constrained flexibility
- Above 40%: high burden risk
Why It Matters
As this ratio rises, savings rate and resilience fall. Unexpected costs become harder to absorb.
Relocation Strategy
Use this ratio as your first screening filter when comparing cities, then layer in taxes, commute cost, and debt payments for a full affordability picture.