1099s in Dynamics GP: A Human Refresher for Today’s ERP World

Let’s be honest: nobody wakes up excited about 1099 season. But if you’re still running Microsoft Dynamics GP—and plenty of finance teams happily are—the good news is that GP handles 1099s pretty gracefully once you know where the switches live. The menus haven’t changed much in years, which is either comforting or frustrating depending on the day you’re having.

The IRS still splits payments between the 1099-NEC (nonemployee compensation) and the 1099-MISC (rents, royalties, attorney payments, other income), and the e-file threshold is now low enough that almost every company is filing electronically. So here’s the refresher I find myself giving clients every January, with a few notes about what’s changed in the ERP world around GP.

Start with the vendor card—every time

Every vendor in GP is either a 1099 vendor or it isn’t. If it is, you also choose a default 1099 type and box. Get this right at onboarding and the rest of the year mostly takes care of itself.

Go to Cards >> Purchasing >> Vendor, pull up the vendor, and click Options. From there you can flag the vendor as Dividend, Interest, or Miscellaneous, and pick the default box—NEC Box 1 for a typical contractor, for example.

A habit worth building: make “collect a W-9 and set the 1099 type” a required step in your vendor onboarding checklist. It’s a five-minute task when a vendor is created and an absolute headache when you’re chasing it down in late December.

Set your minimum amounts once and review them yearly

GP lets you control the reporting threshold for each 1099 box so you’re not generating forms for $12 payments. Head to Tools >> Setup >> Purchasing >> Payables and click 1099 Setup.

The $600 threshold is the familiar number for NEC and most MISC boxes, but a few categories use different limits, and the IRS adjusts them from time to time. Check the current year’s instructions before you print—it takes two minutes and prevents awkward reissues.

Reviewing and editing 1099 amounts

This is where the bulk of cleanup happens. Go to Cards >> Purchasing >> 1099 Details. You can edit monthly amounts directly here, which is handy when a payment got coded to the wrong box or a vendor was reclassified mid-year.

Two things people consistently miss:

Amounts are stored by month, not just by year. If you’re correcting a vendor, walk through every month, not just the annual total.
Check every 1099 type for the vendor (Dividend, Interest, Misc, NEC). It’s surprisingly common to find stray dollars sitting under a type you weren’t expecting.

If you just want to look without changing anything, use Inquiry >> Purchasing >> Vendor 1099 Details. The printer icon in the top-right gives you the Vendor 1099 Details Yearly Report, which is perfect for tying out totals before you print real forms.

Fixing a vendor that shouldn’t be a 1099 vendor at all

Every year, someone discovers an LLC or a corporation accidentally flagged as a 1099 vendor. The fix has to happen in the right order, or you’ll create more work for yourself:

Open 1099 Details and zero out every month for every 1099 type. Don’t skip a type “because there shouldn’t be anything there”—check it anyway.
Run the yearly summary report again to confirm everything is clean.
Then go back to the Vendor card > Options and switch the vendor to Not a 1099 Vendor.

If you change the vendor type first, you’ll orphan the dollars in 1099 history and they’ll keep haunting your reports.

Always run the edit list before printing real forms

Always—really, always—run the edit list first. Go to Tools >> Routines >> Purchasing >> Print 1099, choose your year and 1099 type, and click the printer icon in the upper-right corner to generate the edit list. Review who’s on it, what the amounts are, and which box each amount is landing in.

Only after that should you click Print to generate the actual forms. It’s the difference between a clean filing and reissuing corrected 1099s in February while a vendor is on the phone with you.

You don’t have to wait for year-end close

One legacy myth worth retiring: you do not have to print 1099s before running the 1099 year-end close. Since GP 8.0, you can print 1099s at any time, for any year with history retained. If a vendor calls in March asking for a duplicate, you can reprint it in five minutes—no drama.

Modern habits that make January much easier

Reconcile quarterly, not annually. Run the Vendor 1099 Details report at the end of each quarter and compare it to AP activity. Catching a miscoded payment in April is painless; catching it on January 28th is not.
Keep W-9s on file digitally. Attach them to the vendor record (Doc Attach in GP works fine) so anyone on the team can verify a TIN without digging through email threads or shared drives.
Plan for e-file, not paper. The IRS threshold for required electronic filing is now 10 or more information returns combined across forms. For most businesses, that means e-filing is the default, not the exception.
Pick your transmittal tool early. GP prints the forms, but most teams pair it with a service like Greenshades, Yearli, or a similar provider for e-filing and recipient delivery. Decide in November, not December.
Verify TINs. The IRS TIN matching service is free, and one mismatch caught in October beats a stack of CP2100 notices in the spring.

Where GP fits in today’s ERP conversation

It would be strange to write about Dynamics GP in 2025 and pretend the ERP landscape hasn’t shifted. Microsoft’s mainstream support for GP is winding down, Business Central keeps maturing, and AI-assisted features—Copilot in finance, automated coding suggestions, smarter bank rec—are increasingly baked into the cloud platforms. None of that means you have to rip GP out tomorrow. Plenty of organizations are getting real value from a stable, well-understood GP environment.

But it does mean two things are worth doing:

Treat your annual 1099 process as a diagnostic. If it’s painful, the pain is almost never about the 1099s themselves—it’s about vendor master data, AP workflow, and where reporting actually lives. Those same gaps tend to show up in cash forecasting, audit prep, and month-end close.
Have a point of view on what’s next, even if “next” is three years out. Whether that’s a move to Business Central, another cloud ERP, or extending GP with modern integrations, the worst position is the one where the decision gets made for you by an outage or an end-of-life notice.

How we help

At eIS Business Solutions, we work with finance leadership and operations teams to align ERP strategy with how the business actually runs—whether that’s getting more out of Dynamics GP, mapping a path to Business Central or another cloud ERP, or just sanity-checking the plan you already have. If your 1099 process is the canary in the coal mine for a bigger ERP conversation, we’re happy to take a look.

In the meantime: run the edit list, check every month, keep your W-9s tidy, and good luck with filing season.