
1099 Filing
IRS TIN Matching for Bookkeepers: Free December Check That Prevents B-Notices
Run the IRS TIN Matching Program every December. Catch vendor mismatches before you file and skip the CP2100 B-Notice headache in spring.
10 min

Every January, the same question lands in every bookkeeper's inbox: "Which 1099 form do I use for this vendor?" The answer is more mechanical than most people realize, and getting it wrong costs exactly as much as filing late.
In 2026, both 1099-NEC and 1099-MISC share the same $2,000 payment threshold (raised from $600 under OBBBA). Both have the same January 31 deadline for recipient copies. The form you pick depends entirely on what the payment was for, not who received it.
Here is the decision tree.
What is the difference between 1099-NEC and 1099-MISC?
1099-NEC reports nonemployee compensation: payments to U.S.-based individuals or pass-through entities for services rendered. If a vendor invoiced you for work, use 1099-NEC Box 1. 1099-MISC reports nonservice income: rent (Box 1), royalties (Box 2), prizes and awards (Box 3), medical payments to non-corporations (Box 6), and legal settlement proceeds paid through attorney trust accounts (Box 10). The OBBBA raised the 2026 filing threshold to $2,000 for both forms. File the wrong form and the IRS treats it exactly like a late filing: $340 per form after August 1.
Think of 1099-NEC as the "someone did work for us" form. Think of 1099-MISC as the "someone let us use something" or "we owe someone money that isn't for services" form.
1099-NEC applies when:
A vendor provided services and is not a C-corp or S-corp (with two exceptions covered below). This includes:
If the vendor sent an invoice for work, you're almost certainly on NEC.
1099-MISC applies when:
The payment wasn't for services. Common categories:
Attorney payments trip up more bookkeepers than any other category.
When your client pays an attorney for legal work -- drafting contracts, representing them in a dispute, advising on a transaction -- that goes on 1099-NEC Box 1. The attorney is providing a service.
When your client pays a settlement and the check goes through the plaintiff's attorney in trust, that goes on 1099-MISC Box 10. The attorney isn't being compensated for services; the attorney is a conduit. The attorney still gets their fee (reported on NEC), but the gross settlement amount goes on MISC Box 10.
In practice, this means one transaction can generate two forms for the same attorney. Check the payment description and who the funds ultimately belong to. When in doubt, ask the client's attorney how the settlement was structured.
The rule of thumb: if the attorney earned it, NEC. If the attorney is holding it for someone else, MISC Box 10.
The LLC question comes up on almost every vendor list. LLCs don't have a universal answer -- the filing requirement depends on how the LLC is taxed.
LLC Tax Election | 1099 Required? | Form |
|---|---|---|
Single-member, disregarded entity (default) | Yes | 1099-NEC |
Multi-member, taxed as partnership (default) | Yes | 1099-NEC |
Taxed as S-corporation | No (with exceptions) | -- |
Taxed as C-corporation | No (with exceptions) | -- |
The exceptions for S-corps and C-corps are the same as for any corporation: legal services (attorneys) and medical/healthcare services always require a 1099 regardless of corporate status. A law firm organized as an S-corp that bills your client still gets a 1099-NEC. A medical group organized as a C-corp that receives payments for healthcare services still gets a 1099-MISC Box 6.
How do you know the LLC's tax election? The W-9. Box 3 tells you: "Individual/sole proprietor" or "Limited liability company" with P, S, or C in the LLC classification field. If you don't have a W-9 on file, you should before the payment goes out. The W-9 request workflow takes about 90 seconds to execute properly. See the bookkeeper's glossary if you need a refresher on what "disregarded entity" means in practice.
For 2026, the reporting threshold for both 1099-NEC and 1099-MISC service payments is $2,000, raised from $600 under the One Big Beautiful Budget Act. Here's what that means in practice:
Payments must total $2,000 or more to a single vendor during the calendar year before a 1099 is required. You aggregate across all payments to that vendor, not per invoice.
Reimbursements don't count. If a contractor submits an invoice for $1,800 in labor plus $400 in materials they bought and are passing through, only the $1,800 labor portion counts toward the $2,000 threshold. The $400 reimbursement is not compensation for services. If the labor portion alone doesn't hit $2,000, no 1099 is required.
This matters most for contractors who do a mix of labor and materials. Get in the habit of asking vendors to break out services and reimbursements on their invoices. It makes year-end cleaner and protects your client from over-filing.
The $2,000 threshold does not apply to Box 1 rents on 1099-MISC -- that box retains the prior $600 threshold. The full 2026 filing workflow is covered in the 2026 1099 filing guide.
This is the part most bookkeepers don't know until they get the penalty notice.
If you file the wrong form (NEC when it should be MISC, or MISC when it should be NEC), the IRS treats it identically to a late filing. The penalty schedule under IRC §6721:
Filing the right form on time avoids the penalty entirely. Filing the wrong form and then correcting it after August 1 costs the same as never filing. That's why the decision tree matters.
If you're looking at your corrections process, the 1099 corrections workflow covers the steps. If your client gets a notice about a TIN mismatch that led to a wrong-form situation, TIN matching through the IRS e-services portal is the right next step.
Prizes and bonuses to non-employees: A company that runs a social media contest and pays cash to the winner uses MISC Box 3, not NEC. The winner didn't provide services.
Crop insurance proceeds: A bookkeeper working with agricultural clients: crop insurance proceeds from an insurance company go on MISC Box 9.
State income tax withheld: If state withholding applies (some states require it for nonresident contractors), it goes on Box 15 of whichever 1099 you're filing.
Foreign vendors: U.S. persons and entities get 1099s. Foreign individuals and entities generally get Form 1042-S instead. The W-9 vs. W-8 distinction on the vendor file tells you which bucket applies.
Multiple payments, one vendor: If you paid a contractor $900 in Q1 and $1,200 in Q3, the total is $2,100. One 1099-NEC covers the full year. You don't file quarterly.
Sorting a vendor list by payment type is the kind of work that takes a bookkeeper 45 minutes per client in January. Growthy categorizes transactions automatically -- pattern learning identifies vendor types from invoice descriptions and prior-year classifications, and the 1099 sort reflects that categorization before you review it.
First-import accuracy runs at 85%, meaning most of your vendor list is pre-sorted correctly out of the gate. For returning clients, accuracy is 90% or higher. You review, approve the exceptions, and export. Built by a CPA firm partner who still reconciles books for real clients, Growthy's 1099 categorization features are designed around the decisions a bookkeeper actually has to make in January.
For backup withholding rules that apply when a vendor refuses to provide a TIN, that's a separate but related question you'll want answered before year-end. And the full deadline matrix for 2025 1099s (due early 2026) is in the 1099 deadlines and penalties guide.
Get started with Growthy and clear 1099 season before it starts.
Tax figures verified against IRS Notice 2025-62, IRS 1099-K FAQs, §3406 proposed regulations, and IRS Pub 1099 General Instructions on 2026-05-14.
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CPA firm partner who got tired of watching bookkeepers click categorize 500 times a day. Built Growthy to fix it.
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Run the IRS TIN Matching Program every December. Catch vendor mismatches before you file and skip the CP2100 B-Notice headache in spring.

Backup withholding withholds 24% from vendor payments when a W-9 is missing or TIN mismatch unresolved. §3406 rules for 2026.
