People use "homestead exemption" as a catch-all for almost any owner-occupant tax break, but it is worth separating two things that get bundled together: a dollar-amount exemption that shrinks your taxable value every year, and an assessment growth cap that only slows down how fast your tax bill can rise after you buy. A state can offer one, the other, both, or neither — and the two are not interchangeable.
States with a flat-dollar homestead exemption
Four states in this calculator carry an explicit dollar-amount exemption that comes straight off your assessed value before the tax rate is applied: Florida ($50,000), Texas ($100,000, a 2023 increase that in real life applies specifically to the school-district portion of the bill), California ($7,000), and Georgia ($2,000). This calculator's baseline models the exemption as a subtraction against the state's single blended effective rate rather than breaking out the school-tax slice separately, so treat the figures below as this tool's simplified estimate of the exemption's value, not a line-by-line Texas tax bill.
Texas stands out because its overall effective property tax rate is already one of the highest in the country, so a large exemption against that rate produces by far the biggest flat-dollar savings of the four. Georgia's exemption is real but small enough that it barely moves the bill — some Georgia counties and cities layer on larger local homestead exemptions of their own, which this baseline does not model.
That is not the same as an assessment growth cap
Florida, California, and Texas also cap how fast your taxable value can climb each year after you buy — Florida's Save Our Homes caps homestead growth at 3% annually (10% for non-homestead property), California's Prop 13 caps it at 2%, and Texas caps homestead appraisal increases at 10%. Michigan runs a related but structurally different program: its Principal Residence Exemption removes up to 18 mills of school operating tax for an owner-occupied home, and Proposal A caps taxable value growth at the lesser of inflation or 5% once that value is uncapped at a sale. None of these caps hands you a flat-dollar discount the way Georgia's $2,000 exemption does — instead, they protect you from future increases, and the value compounds the longer you hold the property without it changing hands.
Why the cap usually matters more than the exemption
A $50,000 exemption is worth the same $430 a year in Florida whether you bought in 2015 or last month. An assessment cap is the opposite: it is worth almost nothing in year one and becomes the dominant factor the longer you hold, because it is the gap between your capped assessment and what the home would be assessed at under current market value that keeps growing. This calculator models the exemption and the cap as the two separate mechanisms they are — don't assume a state's exemption dollar figure captures the full long-term benefit of owning there.
States with neither in this baseline
Virginia explicitly has no statewide homestead exemption and no cap on annual assessment growth — property is assessed at fair market value, and some localities offer limited relief for elderly or disabled homeowners outside the scope of this calculator. New York, Illinois, Washington, North Carolina, Tennessee, Ohio, New Jersey, Pennsylvania, and Colorado do not carry a homestead exemption or an assessment-growth-cap field in this baseline either. That is a statement about what this calculator currently models, not a guarantee those states have zero local owner-occupant relief — several run homestead or circuit-breaker programs at the county or municipal level that are worth checking with the local assessor before you buy.
Why this is easy to get wrong when comparing states
A buyer comparing two states side by side can look at a flat-dollar exemption and conclude the state with the bigger number is the better deal for an owner-occupant — but Arizona and Nevada both cap assessment growth (5% and 3%/8% respectively) with no listed dollar exemption at all, which can still outperform a small flat exemption over a long hold. The honest comparison needs the effective rate, the exemption (if any), and the cap mechanism (if any) together, not any one of the three in isolation.