Just launched a startup?
You’re not alone. The Census Bureau reported 578,926 new business applications in July 2026 alone. That’s a lot of entrepreneurs pursuing your same dream.
Here’s the problem:
Each and every one of those startups has to answer to the IRS. And most founders don’t know what tax forms they should be filing… or when they’re due.
Miss a form and the penalties stack up fast.
The best news? Once you understand the forms, filing becomes much easier. Particularly when the right tools do the heavy lifting.
Here is how it all works…
Inside This Guide:
- Why Tax Forms Matter So Much For Startups
- The 6x Tax Forms Every Startup Needs To File
- How Tax Form Software For Accountants Saves The Day
Why Tax Forms Matter So Much For Startups
Tax forms are the IRS’s way of tracking money entering and leaving your business. You’ll need to report every payment made to an employee or contractor. You’ll need to file quarterly for payroll taxes.
Skip it and the IRS will notice.
Late or Missing forms can cost you up to $340 per form for returns due in 2026. Imagine that times 20x contractors… You do the math.
And here’s the kicker…
The IRS has forced nearly everyone to do things online. The e-file threshold dropped to 10 returns (down from 250), and that includes W-2s and 1099s combined. Just hire a few employees and some freelancers and you’ve exceeded the limit.
That’s why startups everywhere, and the companies built to support them, use tax form software. Quality software for accountants allows you to prepare, e-file and distribute W-2 and 1099 tax forms all from one centralized location so you leave nothing behind at year end.
The Tax Forms Every Startup Needs To File
Different startups file different forms. It depends on how you structure your business and who you pay.
But these 6x forms cover the basics for most new companies.
Form W-2 (And W-3)
Hired employees? Then you need Form W-2.
A W-2 shows each employee’s wages and the taxes you withheld from their paycheck. You must mail one copy to the employee and one to the Social Security Administration by January 31. When filing by paper, Form W-3 is filed with it as a summary.
Simple, right? The tricky part is making every number match your payroll records.
Form 1099-NEC
This is the big one for startups.
Many startups are built on contractors, designers, and developers. Form 1099-NEC reports the payments made to those contractors. January 31 is also the due date for this form.
Keep in mind reporting threshold was $600. Reporting threshold for 2026 payments is $2,000. So keep good track of all contractor payments all year.
Ask for a Form W-9 before you pay a contractor. It lists their name, address and tax ID number — information you’ll need for the 1099.
Form 1099-MISC
Paying rent for an office? Paying an attorney?
Payments are often reported on Form 10-99-MISC rather than the NEC. It includes the “other” types of payments such as rent, prizes, legal settlements etc. One of the most common startup errors is confusing the two forms.
Form 941
Form 941 is your quarterly payroll tax return. It reports:
- Federal income tax withheld from paychecks
- Social Security and Medicare taxes
- The employer share of those taxes
It is payable at the end of the month following the end of each quarter. So there are four deadlines a year — April, July, October and January.
Form 940
Form 940 pertains to federal unemployment tax (FUTA). It’s submitted annually by January 31.
It’s short. But it’s easy to forget because it only comes around once.
Your Business Income Tax Return.
Last but not least…
Your startup will need to file a return showing profit or loss. The form varies depending on your type of business:
- C corporation: Form 1120, due April 15
- S corporation: Form 1120-S, due March 15
- Partnership or multi-member LLC: Form 1065, due March 15
- Single owner: Schedule C, filed with your personal return
FYI: If your startup is a Delaware C corp (which most venture-backed ones are), remember to pay Delaware franchise tax. Due March 1 annually.
How Tax Form Software For Accountants Saves The Day
Look at that list again.
Lots of forms. Deadlines. Numbers to keep track of. Doing it manually is time consuming. Trying to do it in a spreadsheet is error prone.
Enter tax form software for accountants. It makes this headache-inducing task simple. Look for software that allows you to:
- Bulk import: Add payroll/vendors info from a spreadsheet instead of keying in each form manually.
- E-file direct to the IRS and SSA: No printing, no envelopes, no wondering if your forms were received.
- Verify TINs before filing: Avoid filing returns with incorrect tax ID numbers that the IRS will reject and send you notices about.
- Mail copies to recipients: Provide a copy of your W-2 and 10-99 forms to your employees and contractors.
- Fix mistakes fast: File corrections quickly, while the penalties are still small.
Pretty handy, right?
If you’re an accountant servicing multiple startups, this is huge. You can manage dozens of companies across one dashboard with varying deadlines. It also removes the fear factor if you’re a founder who plans to DIY your books.
(There’s that “keep it simple” motto in action again.)
What To Look For In Filing Software
Not all tools are equal. Before you choose one, ask yourself a few questions.
Is IRS e-file approved? Can it file state taxes? Is the fee upfront or are you nickel-and-dimed for each form?
Food for thought: The paperwork you file during year one will change drastically by year three. Choose software that will accommodate your startup’s growth.
The Bottom Line On Startup Tax Forms
Startup taxes aren’t so bad once you know what forms you need to file. Filing taxes as a startup is way easier once you have this information fresh in your mind. Here’s a quick review:
- File W-2s for employees and 1099s for contractors by January 31
- Collect a W-9 from every contractor before you pay them
- File Form 941 every quarter and Form 940 once a year
- File your business income tax return on time
- E-file if you have 10 or more returns
Be prepared. Schedule every deadline in your calendar and let technology do the rest.
Your future self (and your accountant) will thank you.
Frequently Asked Questions
What tax forms does a startup need to file?
The majority of startups will require W-2s for employees, 10-99 NEC forms for contractors, quarterly Form 941, an annual Form 940 and business income tax return. Your specific list will vary depending on your business entity.
What is the best tax form software for accountants?
Top-rated tax form software allows for bulk importing, IRS e-file options, TIN verifier and recipient copies. Accountants should seek transparent pricing along with federal and state filing.
