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1099 Contractor in Massachusetts with a Kentucky Client: Where Do You File?

Home state, plus the client state if you work thereNo withholding — 1099

Answer

Massachusetts taxes all of it; Kentucky taxes only what you earn on its soil. Nothing is withheld from a 1099, so you pay Massachusetts quarterly. A Kentucky client alone creates no Kentucky filing obligation — performing services inside Kentucky does, and Massachusetts then credits that tax.

Last verified

The client's location is the wrong thing to track. What matters is where you were sitting when you did the work — which is why a contractor's exposure to Kentucky is measured in days on the ground rather than in invoices sent.

Kentucky publishes no de minimis day count or dollar floor for nonresidents. Any Kentucky-source wage income above the state's general filing threshold requires a nonresident return, and that threshold is reset each year — check the current figure on the Kentucky Department of Revenue nonresident instructions before filing.

What you file

  1. 1Quarterly estimated payments · Massachusetts

    Make quarterly estimated payments to Massachusetts Department of Revenue on your full self-employment income — nothing is withheld from a 1099.

  2. 2Nonresident return · KentuckyForm 740-NP

    File a Kentucky nonresident return only if you performed services inside Kentucky. Kentucky publishes no de minimis day count or dollar floor for nonresidents. Any Kentucky-source wage income above the state's general filing threshold requires a nonresident return, and that threshold is reset each year — check the current figure on the Kentucky Department of Revenue nonresident instructions before filing.

  3. 3Resident return · MassachusettsSchedule OJC

    File the Massachusetts resident return last and claim the credit for any tax paid to Kentucky.

The two states, side by side

 MassachusettsKentucky
Taxes wagesYes — flatYes — flat
Reciprocity partnersNone7 (Form 42A809)
Convenience ruleNoNo
Nonresident returnForm 1-NR/PYForm 740-NP
Credit for other-state taxSchedule OJCSchedule ITC
Nonresident safe harbourNone publishedNone published
Local income taxNoYes
Revenue departmentMassachusetts Department of RevenueKentucky Department of Revenue
Last verified

The other direction

Reversing the commute does not always reverse the answer. Living in Kentucky and working in Massachusetts gives:Home state, plus the client state if you work there.

Kentucky to Massachusetts →

Same two states, different situation

The withholding answer turns on how you are paid and where the work happens, not only on which two states are involved.

Other Massachusetts pairs

Questions people actually ask

I live in Massachusetts and my client is in Kentucky. Do I have to file a Kentucky tax return?

Massachusetts taxes all of it; Kentucky taxes only what you earn on its soil. Nothing is withheld from a 1099, so you pay Massachusetts quarterly. A Kentucky client alone creates no Kentucky filing obligation — performing services inside Kentucky does, and Massachusetts then credits that tax.

Do reciprocity agreements help a 1099 contractor?

No. Every state reciprocity agreement in the country is an arrangement about wage withholding between two revenue departments, and a 1099 has no withholding to switch off. Whether Massachusetts and Kentucky hold an agreement makes no difference to a self-employed filer — sourcing rules decide the answer instead.

How current is this?

The Massachusetts and Kentucky rules on this page were last checked against Massachusetts Department of Revenue and Kentucky Department of Revenue on 2026-08-07. We re-check the full grid every December after state legislative sessions close, and re-check the convenience-of-the-employer states quarterly because that is where the rules move fastest.

Sources

Every fact above comes from the revenue department that publishes the rule. We do not cite secondary summaries, and we do not restate a figure we could not find at source.