IRS Form 3800: General Business Credit Summary and Filing Guide

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Use the IRS Form 3800: General Business Credit Tax Form Calculator IRS Form 3800: General Business Credit as a stand alone tax form calculator to quickly calculate specific amounts for your 2026 3800 state tax return. Alternatively, you can use one of our Combined Federal and State Tax Estimators to quickly calculate your salary, tax, and take-home pay.

What is IRS Form 3800?

Form 3800 is used by businesses and individuals to aggregate and claim the General Business Credit (GBC), a collection of over 30 separate tax credits offered by the IRS to promote investment, innovation, and hiring in specific industries and regions. The form allows for combining these credits, applying carrybacks from previous years, and carrying forward unused credits.

Credits may include research credits, renewable energy incentives, employer-related tax breaks, and investment credits. Instead of reporting each credit independently, Form 3800 streamlines the process and ensures limits are not exceeded.

Who Should File Form 3800?

You must file Form 3800 if:

You have more than one business credit
A credit you are claiming requires it (as instructed on that form)
You are carrying forward or carrying back any part of a credit

Common credits that require Form 3800 include the Investment Credit (Form 3468), Work Opportunity Credit (Form 5884), Research Credit (Form 6765), and others.

General Business Credit
Part I Current Year Credit for Credits Not Allowed Against Tentative Minimum Tax (TMT) (See instructions and complete Part(s) III before Parts I and II)
Name(s) shown on return				Identifying number
1	General business credit from line 2 of all Parts III with box A checked			1
2	Passive activity credits from line 2 of all Parts III with box B checked	2
3	Enter the applicable passive activity credits allowed for 2016 (see instructions)			3
4	Carryforward of general business credit to 2016. Enter the amount from line 2 of Part III with box C checked. See instructions for statement to attach			4
5	Carryback of general business credit from 2017. Enter the amount from line 2 of Part III with box D checked (see instructions)			5
6	Add lines 1, 3, 4, and 5			6
Part II Allowable Credit
7	Regular tax before credits: • Individuals. Enter the sum of the amounts from Form 1040, lines 44 and 46, or the sum of the amounts from Form 1040NR, lines 42 and 44 • Corporations. Enter the amount from Form 1120, Schedule J, Part I, line 2; or the applicable line of your return • Estates and trusts. Enter the sum of the amounts from Form 1041, Schedule G, lines 1a and 1b; or the amount from the applicable line of your return			7
8	Alternative minimum tax: • Individuals. Enter the amount from Form 6251, line 35 • Corporations. Enter the amount from Form 4626, line 14 • Estates and trusts. Enter the amount from Schedule I (Form 1041), line 56			8
9	Add lines 7 and 8			9
10a	Foreign tax credit	10a
b	Certain allowable credits (see instructions)	10b
c	Add lines 10a and 10b			10c
11	Net income tax. Subtract line 10c from line 9. If zero, skip lines 12 through 15 and enter -0- on line 16			11
12	Net regular tax. Subtract line 10c from line 7. If zero or less, enter -0-	12
13	Enter 25% (.25) of the excess, if any, of line 12 over $25,000 (see instructions)	13
14	Tentative minimum tax: • Individuals. Enter the amount from Form 6251, line 33 • Corporations. Enter the amount from Form 4626, line 12 • Estates and trusts. Enter the amount from Schedule I (Form 1041), line 54	14
15	Enter the greater of line 13 or line 14			15
16	Subtract line 15 from line 11. If zero or less, enter -0-			16
17	Enter the smaller of line 6 or line 16 C corporations: See the line 17 instructions if there has been an ownership change, acquisition, or reorganization.			17
Part II Allowable Credit (Continued)
Note: If you are not required to report any amounts on lines 22 or 24 below, skip lines 18 through 25 and enter -0- on line 26.
18	Multiply line 14 by 75% () (see instructions)			18
19	Enter the greater of line 13 or line 18			19
20	Subtract line 19 from line 11. If zero or less, enter -0-			20
21	Subtract line 17 from line 20. If zero or less, enter -0-			21
22	Combine the amounts from line 3 of all Parts III with box A, C, or D checked			22
23	Passive activity credit from line 3 of all Parts III with box B checked	23
24	Enter the applicable passive activity credit allowed for 2016 (see instructions)			24
25	Add lines 22 and 24			25
26	Empowerment zone and renewal community employment credit allowed. Enter the smaller of line 21 or line 25			26
27	Subtract line 13 from line 11. If zero or less, enter -0-			27
28	Add lines 17 and 26			28
29	Subtract line 28 from line 27. If zero or less, enter -0-			29
30	Enter the general business credit from line 5 of all Parts III with box A checked			30
31	Reserved			31
32	Passive activity credits from line 5 of all Parts III with box B checked	32
33	Enter the applicable passive activity credits allowed for 2016 (see instructions)			33
34	Carryforward of business credit to 2016. Enter the amount from line 5 of Part III with box C checked and line 6 of Part III with box G checked. See instructions for statement to attach			34
35	Carryback of business credit from 2017. Enter the amount from line 5 of Part III with box D checked (see instructions)			35
36	Add lines 30, 33, 34, and 35			36
37	Enter the smaller of line 29 or line 36			37
38	Credit allowed for the current year. Add lines 28 and 37. Report the amount from line 38 (if smaller than the sum of Part I, line 6, and Part II, lines 25 and 36, see instructions) as indicated below or on the applicable line of your return. • Individuals. Form 1040, line 54, or Form 1040NR, line 51 • Corporations. Form 1120, Schedule J, Part I, line 5c • Estates and trusts. Form 1041, Schedule G, line 2b			38
Name(s) shown on return				Identifying number
Part III General Business Credits or Eligible Small Business Credits (see instructions)
Complete a separate Part III for each box checked below (see instructions).
A General Business Credit From a Non-Passive Activity B General Business Credit From a Passive Activity C General Business Credit Carryforwards D General Business Credit Carrybacks			E Reserved F Reserved G Eligible Small Business Credit Carryforwards H Reserved
I	If you are filing more than one Part III with box A or B checked, complete and attach first an additional Part III combining amounts from all Parts III with box A or B checked. Check here if this is the consolidated Part III ▸
(a) Description of credit Note: On any line where the credit is from more than one source, a separate Part III is needed for each pass-through entity.			(b) If claiming the credit from a pass-through entity, enter the EIN	(c) Enter the appropriate amount
1a	Investment (Form 3468, Part II only) (attach Form 3468)/td>	1a
b	Reserved	1b
c	Increasing research activities (Form 6765)	1c
d	Low-income housing (Form 8586, Part I only)	1d
e	Disabled access (Form 8826) (see instructions for limitation)	1e
f	Renewable electricity, refined coal, and Indian coal production (Form 8835)	1f
g	Indian employment (Form 8845)	1g
h	Orphan drug (Form 8820)	1h
i	New markets (Form 8874)	1i
j	Small employer pension plan startup costs (Form 8881) (see instructions for limitation)	1j
k	Employer-provided child care facilities and services (Form 8882) (see instructions for limitation)	1k
l	Biodiesel and renewable diesel fuels (attach Form 8864)	1l
m	Low sulfur diesel fuel production (Form 8896)	1m
n	Distilled spirits (Form 8906)	1n
o	Nonconventional source fuel (carryforward only)	1o
p	Energy efficient home (Form 8908)	1p
q	Energy efficient appliance (carryforward only)	1q
r	Alternative motor vehicle (Form 8910)	1r
s	Alternative fuel vehicle refueling property (Form 8911)	1s
t	Reserved	1t
u	Mine rescue team training (Form 8923)	1u
v	Agricultural chemicals security (carryforward only)	1v
w	Employer differential wage payments (Form 8932)	1w
x	Carbon dioxide sequestration (Form 8933)	1x
y	Qualified plug-in electric drive motor vehicle (Form 8936)	1y
z	Qualified plug-in electric vehicle (carryforward only)	1z
aa	New hire retention (carryforward only)	1aa
bb	General credits from an electing large partnership (Schedule K-1 (Form 1065-B))	1bb
zz	Other. Enhanced oil recovery (Form 8830) and certain other credits	1zz
2	Add lines 1a through 1zz and enter here and on the applicable line of Part I	2
3	Enter the amount from Form 8844 here and on the applicable line of Part II	3
4a	Investment (Form 3468, Part III) (attach Form 3468)	4a
b	Work opportunity (Form 5884)	4b
c	Biofuel producer (Form 6478)	4c
d	Low-income housing (Form 8586, Part II)	4d
e	Renewable electricity, refined coal, and Indian coal production (Form 8835)	4e
f	Employer social security and Medicare taxes paid on certain employee tips (Form 8846)	4f
g	Qualified railroad track maintenance (Form 8900)	4g
h	Small employer health insurance premiums (Form 8941)	4h
i	Increasing research activities (Form 6765)	4i
j	Reserved	4j
z	Other	4z
5	Add lines 4a through 4z and enter here and on the applicable line of Part II	5
6	Add lines 2, 3, and 5 and enter here and on the applicable line of Part II	6z

Key Features of Form 3800

Part I: Current year credits from each form
Part II: Carryforward and carryback amounts
Part III: Tax liability limitations
Part IV: Computation of allowable credit

The form consolidates values and checks the taxpayer’s tax liability cap, ensuring that credits don’t exceed tax owed. Unused credits can typically be carried forward up to 20 years or carried back 1 year.

Last reviewed: : If you believe this form requires an update, please contact us.

Tax Planning with the General Business Credit

Form 3800 plays a strategic role in optimizing tax liability for businesses and individual investors. By consolidating credits and applying them across tax years, it helps taxpayers maximize benefits and support growth initiatives.

Using Form 3800 correctly requires understanding which forms to include, tracking prior-year credits, and ensuring all limits are met. When claiming large or multiple credits, working with a tax advisor can prevent errors and missed opportunities.

Keep thorough records of the source forms and maintain documentation for all claimed credits—particularly in cases of IRS review or audit.

Frequently Asked Questions

Can I estimate the General Business Credit?

Start with Form 3800 and then reflect the credit here.

How much would a 401(k) contribution change my net?

Model it with the 401(k) Calculator then rerun this page with your pre-tax amount.

Considering an IRS Offer in Compromise?

Read through Form 656-B to understand eligibility and steps.

What does FICA include?

FICA includes Social Security and Medicare payroll taxes withheld from employee wages.

Is there a quick pay-frequency comparison?

Yes—switch frequency on this page; for employer filings see 941 vs 944.

Important Notes

All calculations are estimates for guidance only. Always review your return and consider professional advice when submitting official filings.