What Is 1099-NEC Box 6 Payer’s State Number? Blanks and Fixes

Box 6 on Form 1099-NEC is where the payer enters their state tax identification number along with the two-letter state abbreviation. That state ID is issued by the state’s tax or revenue agency and is separate from the federal Employer Identification Number that appears higher up on the form. Its job is to let the state match the income and any withholding on the form to the correct business.

What Number Goes in Box 6

The IRS instructions for the 1099-NEC direct the payer to enter the abbreviated state name and the payer’s state identification number in Box 6.¹ This is not the federal EIN. It’s a separate number the state uses to track income reporting and withholding under its own tax system.

The number goes by different names depending on the state: state withholding number, state account number, or state tax ID. Formats and lengths vary. A handful of states that don’t issue their own withholding numbers may allow or require the federal EIN in this box instead, but that’s the exception.

Why the Number Matters: How Boxes 5, 6, and 7 Fit Together

Boxes 5 through 7 form the state reporting section of the 1099-NEC. The IRS treats them as optional for federal purposes; the instructions say they “are provided for your convenience only and need not be completed for the IRS.”¹ Optional for the IRS is not the same as optional for the state. Many state revenue agencies require the information, and skipping it can create problems at the state level.

Each box in that section carries a specific piece of information:

Box 5 shows any state income tax the payer withheld from the contractor’s payments.
Box 6 shows the abbreviated state name and the payer’s state identification number.
Box 7 shows the amount of nonemployee compensation subject to that state’s tax jurisdiction.

Box 6 ties the other two together. Without a valid state ID, the state can’t match the withheld tax in Box 5 or the income in Box 7 to the right business. That matching is what lets the state confirm a contractor’s withholding credit is legitimate when the contractor claims it on a state return.

Where a Payer Finds Their State ID Number

Businesses usually find their state tax ID on the registration documents received when they first registered with the state tax or revenue agency. The number also appears on state-issued withholding tax coupons and is normally accessible inside the business’s account on the state tax portal.

If you’re the payer and can’t locate the number, contact the state department of revenue directly. Using the wrong number, or a number that belongs to a different state, can cause a filing to be rejected. Maryland, for example, has warned that missing or incorrect state identification numbers will delay processing or trigger outright rejection.

When Box 6 Can Be Left Blank

Nine states have no state income tax: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. If both the payer and the contractor are located in one of these states and no work was performed elsewhere, there’s no state income tax to report and Box 6 can stay blank.

The box is also irrelevant when the payer has no filing obligation in any state. If a contractor performed all work in the payer’s home state and no state withholding applied, the state boxes serve no purpose, though the federal 1099-NEC still has to be filed if the payment meets the reporting threshold. Check the state’s own rules before deciding the box is truly unneeded; a state may still want its own copy of the form even when no tax was withheld.

What To Do if You Receive a 1099-NEC With Box 6 Blank

Contractors sometimes get a 1099-NEC showing income in Box 1 but nothing in Boxes 5, 6, or 7. That doesn’t necessarily mean something is wrong. Copy 2 of the form goes to the recipient “for use in filing the recipient’s state income tax return,” but the state boxes aren’t required for federal purposes.¹

You still owe state income tax on earnings from any state that taxes your income, and you don’t need the payer’s state ID to file your own state return; you report the income based on where you performed the work. The payer’s state number becomes important when you’re claiming a credit for state tax that was actually withheld. If Box 5 shows withholding but Box 6 is blank, ask the payer for a corrected form. Without the state ID, the state has no way to verify the payer remitted the withheld funds, and your credit can get held up.

Reporting Two States on One Form

The 1099-NEC allows reporting for up to two states in the state information section. Boxes 5 through 7 are split by a dashed line, with room for one state on each side.¹ This comes up when a contractor worked in two different states for the same payer during the year, or when the payer withheld tax for more than one state.

Each state gets its own entries: its own withholding in Box 5, its own state ID in Box 6, and its own income figure in Box 7. If the contractor worked in three or more states, the payer files additional 1099-NEC forms for the remaining ones.

Fixing a Wrong or Missing State ID

If a payer discovers a mistake in Box 6 after filing, they need to submit a corrected 1099-NEC. The process is to prepare a new form and check the “Corrected” box at the top. That tells the IRS and the state the new form replaces the original.¹

The corrected form has to reach three recipients: the IRS, the contractor, and the relevant state tax authority. Paper filers may need a corrected Form 1096 transmittal for the state copy. Electronic filers using the Combined Federal/State Filing Program can sometimes route the correction to the state automatically through the IRS.

Timing controls the cost. Federal penalties for incorrect information returns in 2026 are $60 per form if corrected within 30 days, $130 if corrected by August 1, and $340 if not corrected at all. Intentional disregard carries a $680 per-form penalty.² State penalties vary but follow similar escalating structures. The 1099-NEC is due to both the IRS and the recipient by January 31 of the year following payment, so a mistake caught before that date can usually be fixed with no penalty at all.¹

1
Internal Revenue Service. Instructions for Forms 1099-MISC and 1099-NEC
2
Internal Revenue Service. Information Return Penalties