Step-by-Step: How to Fill Out and File a 1099 Form

What a 1099 form is and who has to complete one

A 1099 form is a record of payment you received that was not withheld for taxes. If you earned money as an independent contractor, freelancer, or from investments, the person or business that paid you must send you a 1099 and file a copy with the IRS. You then report that income on your own tax return.

You are responsible for completing your own tax return — the 1099 is not something you "complete" and send in. Instead, you receive a 1099 from whoever paid you, and you use the information on it to fill out your tax forms. However, if you are the one paying someone else (a contractor, freelancer, or vendor), you must complete and file a 1099 to report what you paid them.

The most common type is the 1099-NEC (nonemployee compensation), used for independent contractors and freelancers. Other types include the 1099-INT for interest income, 1099-DIV for dividends, and 1099-MISC for miscellaneous income. Each type has slightly different boxes and purposes.

Key Takeaways

If you received a 1099, you do not file it with the IRS — the payer already did. You use the information on it to report income on your own tax return.
If you paid someone as an independent contractor, you must complete and file a 1099-NEC with the IRS and send a copy to the contractor by January 31.
The 1099-NEC requires the contractor's name, address, tax ID number, and the total amount paid in box 1, with no tax withheld.
You can file a 1099 on paper or electronically through the IRS FIRE system, but most tax software and payroll services handle this automatically.
If you received a 1099 with incorrect information, contact the payer when ready to request a corrected form before filing your tax return.

When you must file a 1099 as a payer

You are required to file a 1099-NEC if you paid an independent contractor or freelancer $600 or more during the calendar year. This applies whether you paid them in cash, check, credit card, or digital payment. The threshold is $600 per year per person — if you paid one contractor $400 and another $300, you do not file for either. If you paid one contractor $600 or more, you file for that person only.

You must file by January 31 of the following year. For example, if you paid someone in 2024, the 1099-NEC is due by January 31, 2025. You send one copy to the contractor and file another copy with the IRS. Some states also require copies filed with the state tax authority.

You do not file a 1099 for payments to corporations or LLCs taxed as corporations — only for individuals and sole proprietorships. If you are unsure whether someone is incorporated, ask them or request their tax ID. If they provide a business EIN (employer identification number) rather than a Social Security number, you typically do not file a 1099 for them.

How to gather the information you need

Before you complete a 1099-NEC, collect the contractor's full legal name, current mailing address, and tax identification number. The tax ID is usually their Social Security number (SSN) if they are self-employed, or an EIN if they operate as a business. Ask the contractor to provide this information on a W-9 form — this is a straightforward one-page form that contractors fill out and return to you. It protects you from penalties if the information turns out to be wrong.

You also need the total dollar amount you paid them during the year. Add up all payments — invoices, reimbursements, and any other compensation. Do not include sales tax you collected on their behalf or payments for materials they provided separately. If you paid them through a payment processor like PayPal, Stripe, or Square, that service may have already issued them a 1099-K, which reports gross payment volume. The 1099-NEC you file should match the total you actually paid them for services.

Gather receipts, invoices, or payment records showing the dates and amounts. You do not attach these to the 1099, but you must keep them for your records in case the IRS asks questions later.

Filling out the 1099-NEC form itself

The 1099-NEC has two sides. The top half is for your information as the payer, and the bottom half is for the contractor's information. Here is what goes in each key box:

Box 1a (Nonemployee compensation): Enter the total amount you paid the contractor for services. This is the main number on the form.
Your name and address (top left): Your business name and mailing address.
Your tax ID (top left): Your EIN or SSN, depending on your business structure.
Contractor's name and address (bottom half): Their full legal name and current mailing address.
Contractor's tax ID (bottom half): Their SSN or EIN.
Account number (optional): If you track this contractor with an internal account or reference number, you can enter it here for your own records.

Leave boxes 2 through 7 blank unless you withheld federal income tax, Social Security tax, or Medicare tax — which you typically do not for independent contractors. Those boxes are for situations where you were required to withhold, which is rare for 1099 work.

You must file a separate 1099-NEC for each contractor. If you paid five different contractors, you complete five separate forms. The IRS uses the contractor's tax ID to match the form to their tax return, so accuracy here is critical.

Filing your 1099 with the IRS

You have two options: file on paper or file electronically. Most small businesses use tax software or their accountant to file electronically, which is faster and reduces errors.

To file on paper, print the 1099-NEC form (available free from the IRS website), complete it by hand or type it, and mail it to the IRS address listed in the instructions. You must also send a copy to the contractor by January 31. Keep a copy for your records.

To file electronically, use the IRS FIRE system (Filing Information Returns Electronically) or work through a tax software provider or payroll service. FIRE is free but requires you to set up an account and learn the system. Most small business owners use their accountant or payroll software instead, which handles the filing automatically. If you use a service like QuickBooks, Gusto, or ADP, you can often generate and file 1099s directly through that platform.

Whichever method you use, you must file by January 31. If you miss the important date, the IRS charges a penalty that increases based on how late you are — $50 per form if filed within 30 days late, up to $280 per form if filed more than 60 days late. Correcting a mistake also costs money, so double-check names, addresses, and amounts before you submit.

What to do if you received a 1099 with errors

If you received a 1099 as a contractor and the information is wrong — the amount is incorrect, your name is misspelled, or your address is wrong — contact the payer when ready and ask them to issue a corrected 1099-NEC. They will file a corrected form (marked as such) with the IRS and send you a copy. Do not file your tax return until you have the corrected form, because the IRS will match what you report to what they received from the payer.

If the payer refuses to correct it or you cannot reach them, you can still file your tax return with the correct information. Attach a note explaining the discrepancy. The IRS may contact you to verify, but you will not be penalized if you can show the correct amount.

If you filed a 1099 as a payer and made a mistake, file a corrected 1099-NEC when ready. The IRS prefers corrected forms filed early to amended forms filed late. Use the same process you used to file the original — if you filed on paper, file a corrected paper form; if you filed electronically, file a corrected electronic form.

Common mistakes to avoid when completing a 1099

The most frequent error is using the wrong tax ID. If you have the contractor's SSN but they operate as an LLC with an EIN, use the EIN. If you use the wrong number, the form will not match their tax return and both of you may face IRS notices. Always ask the contractor for their tax ID on a W-9 form before you pay them.

Another common mistake is including payments that should not be on a 1099. Do not include reimbursements for materials or expenses the contractor paid for themselves. Do not include payments to corporations (unless they are single-member LLCs taxed as sole proprietorships). Do not include payments for rent, utilities, or other non-service expenses. Only include compensation for work or services performed.

Misspelling the contractor's name or using an outdated address also causes problems. The IRS uses the name and address to match the form to their tax return. If either is wrong, the match fails and the IRS may send notices to both of you. Use the exact legal name from their W-9 and their current mailing address.

Finally, do not file late. January 31 is a hard important date. If you are close to the important date and unsure about a form, file what you have and correct it later rather than missing the important date entirely.

Frequently Asked Questions

Do I have to file a 1099 if I paid someone in cash?

Yes. The IRS requires a 1099-NEC for any payment of $600 or more to an independent contractor, regardless of how you paid them — cash, check, credit card, or digital payment. Keep records of the payment so you can document it if the IRS asks.

What if the contractor never gave me their tax ID?

Ask them for it before you file. If they refuse or you cannot reach them, you can file the 1099 with the information you have and note that the tax ID was not provided. The IRS will contact the contractor to get the correct number. However, you may face a penalty if the form is incomplete, so make a good-faith effort to get it first.

Can I file a 1099 after January 31?

You can, but you will owe a penalty. The penalty is $50 per form if you file within 30 days late, $100 per form if you file 31 to 60 days late, and $280 per form if you file more than 60 days late. File as soon as possible if you missed the important date.

Do I need to file a 1099 for a contractor who is incorporated?

No. You only file a 1099-NEC for individuals and sole proprietorships. If the contractor operates as a C corporation or S corporation, you do not file a 1099. Ask them for their business structure or request a W-9 form, which will clarify whether they are incorporated.

What if I paid a contractor less than $600 total?

You are not required to file a 1099-NEC. However, you must still report the payment as a business expense on your own tax return. Keep records in case the IRS asks about it later.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.