Drive south out of Bowling Green on I-65 and the exit for Franklin, Kentucky shows up before the radio finishes a song. Keep going another fifteen minutes and you're in Tennessee, close enough to see the Nashville skyline on a clear day. That fifteen-minute gap is the entire sales pitch for buying a house in Simpson County: live in Kentucky, work in Nashville, keep the paycheck a Tennessee job pays and the home price a Kentucky county charges.
Half of that pitch holds up. The other half runs into a rule almost nobody explains before the first paycheck arrives.
The Half That's True
The price gap is real, and it's not subtle. A local realtor told WNKY News 40 that housing in Bowling Green and nearby Franklin runs nearly 50 percent cheaper than comparable homes in Nashville. Recent closed sales in Franklin back that up. A four-bedroom home on North High Street closed at $600,000 in June 2026. A more modest three-bedroom on Bennington Place closed the same month at $264,900. Active listings across Franklin this summer are averaging just over $320,000. One recent sale even straddled the line literally, a property marketed jointly as Franklin, Kentucky and Mitchellville, Tennessee, closing at $810,000 in late June, a reminder of how blurry the state line gets when you're house hunting this close to it.
That's a genuine discount against Nashville-area prices, and it's the reason Simpson County keeps showing up on relocation shortlists for households who work north of the border but don't want to pay Nashville rates for a driveway.
The Half Nobody Explains at the Open House
Here's where the math gets more complicated than the price comparison suggests.
Kentucky has tax reciprocity agreements with seven states: Illinois, Indiana, Michigan, Ohio, Virginia, West Virginia, and Wisconsin. Reciprocity means if you live in Kentucky and work in one of those states, you only pay income tax to Kentucky. Your paycheck gets to skip the other state's withholding entirely.
Tennessee isn't on that list, and it can't be. Reciprocity agreements exist to prevent double taxation between two states that both tax income. Tennessee doesn't tax income at all, so there's no second tax to coordinate away. A Franklin resident working in Nashville already avoids Tennessee withholding, because Tennessee never withholds anything from anyone.
What that resident doesn't avoid is Kentucky's tax on that same paycheck. Kentucky law taxes residents on income from all sources, no matter where it was earned or where the work was physically performed. A Nashville salary, a Nashville bonus, a Nashville-based remote paycheck: all of it counts as Kentucky income if the person cashing the check lives in Simpson County. The Kentucky Department of Revenue spells this out plainly in its own guidance on credits for taxes paid to other states: the credit only applies when tax was actually assessed and paid somewhere else. Since Tennessee assesses nothing, there's nothing to credit against.
The word "reciprocity" is doing a lot of quiet work in the informal version of this pitch. People hear it and picture the Cincinnati-Kentucky commuter arrangement, where crossing the river doesn't cost you anything extra. The Nashville commute doesn't work that way, because the tax bill follows the address on your driver's license, not the parking garage where you leave your car every morning.
What the Math Actually Looks Like
Here's how the two states compare on the categories that actually move the needle for a household choosing between a Franklin, Kentucky address and one across the line.
| Tax | Kentucky | Tennessee |
|---|---|---|
| State income tax | 3.5% flat, effective January 1, 2026 | 0% |
| Combined sales tax | 6% state rate | Averages roughly 9.55%, among the highest in the country |
| Statewide average property tax | Generally cited between 0.73% and 0.86% depending on the source | Roughly 0.67% |
Run those numbers for a household earning $100,000 with a $400,000 home, using each state's averages. Tennessee's zero income tax saves that household about $3,500 a year. Tennessee's lower property tax rate, applied to the same $400,000 home value, saves another few hundred dollars. Kentucky claws some of that back through its lower sales tax, since Tennessee's heavier consumption tax adds a few hundred dollars a year in everyday spending. Net it out and the Tennessee side of that specific comparison comes out a few thousand dollars ahead annually, entirely on the tax side, before either household has spent a dollar on the house itself.
That's the piece the housing discount doesn't cancel out. It offsets it.
Simpson County's own property tax figures complicate the picture in Franklin's favor, though. Different assessment services put the county's effective rate anywhere from about six-tenths of a percent to nine-tenths of a percent, a wider spread than you'd expect from one county, largely because they calculate off different baselines. Even at the high end of that range, the dollar amount that comes due is smaller than the statewide-average math above suggests, simply because Franklin's home values start so much lower. A $320,000 Franklin home at a slightly higher percentage rate still generates a smaller tax bill than a $700,000-plus Nashville-area home at a lower rate. The rate comparison and the dollar comparison tell two different stories, and the dollar amount is the one that shows up on the bill.
The Kentucky Rate Is a Moving Target
The income tax gap is also not fixed. Kentucky's flat rate has been sliding down since 2018, when it sat at 5 percent. It stepped down through 4.5 percent, then to 4 percent for the 2025 tax year, and now to 3.5 percent starting this year, under a 2022 law that ties further cuts to state revenue performance rather than a set calendar. If Kentucky's general fund keeps clearing its targets, the rate can keep falling. If it doesn't, the rate holds where it is until conditions change.
That means the tax gap between a Franklin address and a Nashville-area one has been narrowing for years and could keep narrowing, but it isn't guaranteed to. Anyone running this comparison for a ten-year hold should treat the current 3.5 percent as a snapshot, not a fixed input.
What This Means If You're Weighing Franklin Against a Nashville Address
- The income tax difference scales with earnings. A single-income household near the regional median will barely feel it. A two-income household clearing well into six figures combined will feel it every pay period, since Kentucky's flat rate applies to every dollar with no bracket relief.
- Remote work doesn't change the calculation. Working from a home office in Franklin for a Nashville-based employer doesn't reduce or eliminate the Kentucky tax owed on that income. Residency is what triggers it, not where the desk sits.
- The housing savings are front-loaded. You feel the lower purchase price and lower mortgage payment immediately. The tax difference is a smaller, recurring number that adds up over the years you own the home, which matters more the longer you plan to stay.
- Property tax dollars, not property tax rates, are the number to compare. A slightly higher rate on a much lower home value can still land as a smaller check than a slightly lower rate on a much higher one.
None of this is tax advice, and a household weighing this decision seriously should run their specific numbers past a CPA who knows both states. The mechanics here come straight from Kentucky's own Department of Revenue guidance, but every household's actual liability depends on income sources, filing status, and deductions that a general comparison can't account for.
A Couple of Questions Worth Asking Before You Sign
Does Kentucky tax my paycheck if my employer is in Nashville and I never go into an office? Yes. Kentucky taxes residents on income from all sources, and remote work doesn't change where you're considered a resident.
Can I claim a Tennessee tax credit to offset what Kentucky charges? No. Kentucky's credit for taxes paid to another state only applies when the other state actually assessed and collected tax. Tennessee doesn't assess income tax, so there's nothing to credit.
Will Kentucky's income tax eventually disappear and close this gap entirely? It's trending that way, but it isn't automatic. Further rate cuts depend on the state hitting revenue targets each year, so the pace of any future reduction isn't set on a fixed schedule.
If you're comparing a home in Franklin against something across the state line, the price tag only tells part of the story. Talk it through with someone who knows both sides of that line before you decide which one makes sense for your household. Jetton Real Estate works both markets every week and can walk you through what the numbers actually mean for your specific situation. Contact us when you're ready to talk it through.
