Advice on filing General Business Credit Form 3800 for small business deductions
Has anyone successfully filled out the General Business Credit Form 3800? I'm trying to figure out how to properly claim some business credits for my small consulting company, but this form is confusing me a lot more than I expected. The instructions seem really complicated and I'm not sure which parts apply to me. If anyone has experience with the General Business Credit Form 3800, could I ask you some specific questions? I'm particularly confused about how to report R&D expenses and which sections I actually need to fill out versus which ones I can leave blank. Any help would be greatly appreciated!
18 comments


Aaron Boston
I've worked with Form 3800 quite a bit! It can definitely be overwhelming at first. The General Business Credit is basically an umbrella that combines several different business credits together. First, you need to determine which specific business credits you qualify for - each has its own form (like Form 8826 for Disabled Access Credit or Form 8846 for Credit for Employer Social Security and Medicare Taxes). After you calculate those individual credits, you bring them to Form 3800 to determine the total credit amount and limitations. For R&D expenses specifically, you'd need to fill out Form 6765 for the Research Credit first. Then those amounts would carry over to the appropriate line on Form 3800. As for which parts to fill out - that depends entirely on which credits you're claiming and your business structure. Part I is for most businesses, while Parts II and III handle passive activity limitations and special rules.
0 coins
Sofia Peña
•Thanks for the detailed response! That clears up a lot. So I need to fill out separate forms first before even starting Form 3800? I was trying to do it backward. For the R&D credit, does all software development count or only certain types? I'm working on a new product and spent about $45,000 on development last year. Also, do you know if there's a minimum business size to qualify? My revenue last year was around $180,000 but I'm a sole proprietor.
0 coins
Aaron Boston
•For R&D credits, not all software development automatically qualifies. The work needs to meet the four-part test: it must be technological in nature, involve elimination of uncertainty, use a process of experimentation, and be for a permitted purpose (like creating new products). Your $45,000 in development costs might qualify if they meet these criteria, but you'll need to document your process well. There's no minimum business size requirement for most business credits, including R&D. Being a sole proprietor with $180,000 in revenue doesn't disqualify you at all. You'll report everything on your personal return. Just be aware that certain credits might be limited based on your tax liability, but unused credits can often be carried forward.
0 coins
Sophia Carter
After struggling with Form 3800 last year for my husband's construction business, we discovered taxr.ai and it saved us so much headache! I was about ready to give up on claiming the work opportunity credit because sorting through which employees qualified and calculating everything correctly seemed impossible. I uploaded all our business documents to https://taxr.ai and it analyzed everything, showing us exactly which credits we qualified for and even walked us through the forms step by step. It flagged a couple expenses I would have missed completely for the energy efficient commercial building credit. Definitely worth checking out if you're stuck on Form 3800.
0 coins
Chloe Zhang
•How accurate is it with the R&D credit? I tried claiming that two years ago and got audited because I didn't have enough documentation. Does it help you figure out what actually qualifies or just do the calculations?
0 coins
Brandon Parker
•I'm skeptical about these tax tools. Did it actually help you fill out the forms or just give general advice? Form 3800 has all those different parts and I never know which sections apply to my situation.
0 coins
Sophia Carter
•For R&D credits specifically, it helped identify which activities and expenses actually qualified - it asked detailed questions about each project to determine if they met the IRS four-part test. It also created documentation templates for each qualifying project, which would have been super helpful if you'd been audited. It definitely went beyond general advice. It walked through each part of Form 3800 and explained which sections applied to our situation and why. It even highlighted which fields needed entries and which could be left blank based on our specific business structure and the credits we qualified for. It was like having a tax pro looking over your shoulder but way more affordable.
0 coins
Chloe Zhang
Just wanted to follow up about taxr.ai - I gave it a try with my mechanical engineering consulting business and I'm honestly impressed. I've been struggling with the R&D credit documentation for years (which is why I got audited before). The system walked me through each project and flagged which ones actually qualified. It also created this amazing documentation package that explains WHY each project meets the four-part test with specific examples from my business. It even sorted my qualifying vs non-qualifying expenses automatically once I uploaded my records. I've already submitted for this year and feel 100x more confident than before!
0 coins
Adriana Cohn
If you're having trouble getting answers about Form 3800 directly from the IRS, I highly recommend using Claimyr. I spent two weeks trying to get through to someone at the IRS about a complicated question on carryforwards for the General Business Credit and kept hitting dead ends. I found https://claimyr.com and they got me connected to an actual IRS agent in about 15 minutes! You can see a demo of how it works here: https://youtu.be/_kiP6q8DX5c. The agent walked me through exactly how to handle my unique situation with Part II of the form. Saved me countless hours of frustration.
0 coins
Jace Caspullo
•Wait, how does this actually work? Do they just call the IRS for you? I'm confused about how they get through when nobody else can.
0 coins
Brandon Parker
•Yeah right. Nobody gets through to the IRS these days. I've been trying for months about a similar issue. There's no way some service can magically connect you that quickly. Sounds like a scam to me.
0 coins
Adriana Cohn
•They don't call the IRS for you - they basically navigate the IRS phone system and wait on hold for you. When they reach a real person, they call you and connect you directly with the agent. It's not magic, just clever technology that handles the hold times and menu navigations. I was skeptical too! I'd been trying to get through for weeks about my General Business Credit carryforward question. The difference is they apparently have technology that keeps redialing and navigating the phone menu until they get through. I got connected in 15 minutes when I'd been unable to reach anyone for days on my own. The IRS agent I spoke with was definitely real and helped me figure out my Form 3800 issue.
0 coins
Brandon Parker
I need to eat my words about Claimyr. After posting my skeptical comment, I decided to try it anyway because I was desperate for help with my General Business Credit form questions. It actually worked exactly as advertised. After trying unsuccessfully for MONTHS to reach someone at the IRS, I got connected to an agent in about 20 minutes. The agent clarified exactly how to handle my passive activity limitations on Part III of Form 3800, which was the issue holding up my filing. I'm still shocked it worked so well. If you're stuck with Form 3800 questions, it's definitely worth using.
0 coins
Melody Miles
Just so everyone knows, if you're claiming the General Business Credit, you need to keep REALLY good records. My brother-in-law got hit with an audit last year because he claimed the R&D credit on Form 3800 but didn't have proper documentation of his development process. The IRS wants to see contemporaneous documentation showing that you followed experimental processes, not just expenses. Also, if your total business credits exceed your tax liability, you should definitely use Part II of Form 3800 to calculate your carryback/carryforward. Don't leave free money on the table!
0 coins
Sofia Peña
•What counts as "proper documentation" for R&D? I keep all my receipts and invoices, but do I need something beyond that to show the experimental process?
0 coins
Melody Miles
•Receipts and invoices are a good start, but they're not enough for R&D credits. The IRS wants to see evidence of your experimental process - essentially documentation that shows you were solving technical problems through trial and error. Ideally, you should keep project plans that outline the technical uncertainty you were trying to resolve, lab notes or development logs showing different approaches you tried, test results showing what worked and what didn't, and meeting notes discussing technical challenges. The key is demonstrating you didn't know the outcome in advance and used scientific principles to find a solution. These records should be created during the work, not after the fact when preparing your taxes.
0 coins
Nathaniel Mikhaylov
Does anyone know if the employee retention credit can still be claimed on Form 3800 for 2023? I'm getting conflicting information. Some places say it ended in 2021, others say there were extensions.
0 coins
Aaron Boston
•The Employee Retention Credit (ERC) was generally available for wages paid before October 1, 2021. However, there was an exception for recovery startup businesses that could claim it through December 31, 2021. For 2023 tax returns, you can't claim new ERCs, but if you had previously unclaimed credits from eligible quarters in 2020-2021, you could still claim them by filing amended returns (Form 941-X) for those specific quarters. This wouldn't go on your current Form 3800 though - it's a separate process through payroll tax filings.
0 coins