The percentage, isolated from the salary math
Sometimes you just want the gap itself — how much more or less expensive one place is than another — without converting it into an equivalent-salary figure first. This calculator surfaces that percentage difference directly, computed from the same BEA index data as every other comparison on this site, so you can read the raw gap on its own before deciding whether to translate it into dollar terms.
Direction matters for the percentage, not the verdict
A genuinely confusing property of percentage differences: "New Jersey is 25% more expensive than Iowa" and "Iowa is 20% cheaper than New Jersey" can both be true for the exact same underlying gap — percentages are always relative to whichever place you started counting from. The cheaper/similar/pricier label this calculator shows doesn't have that problem: it's computed symmetrically, so it always agrees with itself no matter which place you enter first, even though the percentage number itself will read a little differently depending on direction.
When "about the same" beats a precise number
Not every gap is meaningful. Two places within about a percentage point of each other are treated as "about the same" here rather than forcing a cheaper/pricier label onto a difference small enough to be noise in the underlying data — Iowa and Oklahoma, for example, differ by only a few hundredths of a percent in the 2024 data.
Frequently asked questions
How is the percentage difference calculated?
As (index of place B minus index of place A) divided by index of place A, times 100 — a negative result means place B is cheaper; a positive result means it's pricier.
Why does the percentage change if I swap the two places?
Percent differences are naturally direction-dependent — going up 25% and back down is only a 20% drop, mathematically. The underlying gap between the two places doesn't change, but the percentage figure is always relative to whichever place you start from.
Does the calculator's cheaper/similar/pricier verdict also change if I swap the places?
No — the verdict itself is calculated symmetrically, specifically so it can't disagree with itself depending on which place you enter first. Only the percentage's exact wording is direction-dependent, not the classification.
Worked examples
New Jersey vs. Iowa
A well-separated pair, on the all-items basis.
Iowa is 19.3% cheaper than New Jersey — the difference alone, without converting to a salary figure.
Two nearly-tied states
Iowa and Oklahoma, whose 2024 indices differ by under a tenth of a point.
Iowa and Oklahoma differ by only about 0.09% — well inside this calculator's "about the same" band, so the difference is not meaningful on its own.
What affects the result
Percent difference is direction-dependent to READ, not to classify
"B is 20% more expensive than A" and "A is 17% cheaper than B" can both be true for the same pair — percent differences are computed relative to whichever place is the starting point, even though the underlying gap is the same. This calculator classifies cheaper/similar/pricier using a symmetric method specifically so the VERDICT never depends on which place you entered first — only the percentage's phrasing does.
Common mistakes to avoid
- ✗Reading a percent difference as a percent of your salary — it's a percent difference in the underlying price index, not a direct pay cut or raise percentage (use the equivalent-salary figure for that).
- ✗Assuming a small percent difference is always insignificant — even a few percent, applied to a six-figure salary, is a real dollar amount.
Practical takeaways
- ✓Use the percent-difference figure to quickly gauge how far apart two places are, then check the equivalent-salary figure for the actual dollar impact on your own income.
- ✓A difference under about 1% is treated as "about the same" here — small gaps like that are usually smaller than the underlying data's year-to-year noise.
Key terms
- Regional Price Parity (RPP)
- A BEA index measuring how price levels for the same mix of goods, services, and rent differ across US states and metro areas, expressed as a percentage of the national average (100). An RPP of 110 means prices there run about 10% above the national average; 90 means about 10% below.
- All-items basis
- The overall cost-of-living index — a weighted composite covering housing, goods, utilities, and other services. This is the default, whole-basket comparison.
More questions answered
What counts as a "small" difference?
This calculator treats a spread of 1% or less as "about the same" — close enough that other factors (job market, taxes, personal preference) likely matter more than the cost-of-living gap itself.
Why might the percentage look different if I swap the two places?
The percent DIFFERENCE is naturally direction-dependent (going up 25% and coming back down is only a 20% drop, mathematically) — but the cheaper/similar/pricier VERDICT itself never flips depending on which place you enter first here, by design.
Model assumptions & disclosures
Source: BEA Regional Price Parities, 2024 vintage. Every figure on this page comes from the U.S. Bureau of Economic Analysis's Regional Price Parities (state table SARPP, metro table MARPP), released February 19, 2026. This is the same government data behind BEA's own real personal income statistics — not a third-party cost-of-living estimate. BEA's next release (the 2025 vintage) is scheduled for December 10, 2026; figures here will not reflect that update until this site's data is regenerated afterward.
Pre-tax — state and local income tax are not modeled. Regional Price Parities measure differences in the price of goods, services, and rent across places. They say nothing about what you'd actually keep after state or local income tax, sales tax, or property tax — all of which vary independently of cost of living and are real, separate factors in any relocation or job-offer decision.
The "Rent only" basis is a renters' index, not a homeowner's housing cost. BEA defines this series specifically: rents RPPs are estimated only for observed tenants' actual rents and an imputed rental-equivalent value for owner-occupied homes — they do not include a homeowner's own mortgage payment, property tax, insurance, or maintenance costs. If you own your home, switching to "Rent only" shows what a tenant pays in each place, not your own housing expense — it is never a stand-in for "housing costs" broadly.
Metro-area rents are a 3-year average, not a single-year snapshot. BEA estimates state-level rents from a single year of Census American Community Survey (ACS) data, but metro-area rents from a smoothed 3-year ACS average — metro areas are smaller geographies and need the extra years of data for a reliable sample. That smoothing is real: Coeur d'Alene, ID's metro rents index moved from 99.7 to 117.2 and back to 105.6 across the three years folded into the 2024 figure alone. A metro rents number is a multi-year average, not "as of 2024" the way the all-items and state figures are.
Not financial advice. This calculator provides an estimate to help you plan a comparison, not a guarantee of what you'd actually pay or earn in either place. Combine it with your own research — including actual job offers, tax rates, and cost quotes for your specific situation — before making a relocation or compensation decision.