If you run a closely held C‑corp or a personal service corporation, this form decides how much of your passive activity loss or credit actually counts this year, and what must wait for a better day.
You are likely here for one of three reasons. You had passive losses that did not offset income on the return, you have suspended credits and want to free them up, or you are trying to decide if Form 8810 is required at all. You are in the right place. Below is a practical walkthrough you can use with your team, with links to the official rules and a checklist you can plug straight into your workpapers.
Key Takeaways
- Form 8810 is where personal service corporations and closely held corporations compute passive activity loss limits and passive activity credit limits under section 469, then determine what is deductible now and what carries forward. Attach it to Form 1120 when required.
- A PSC has a passive activity loss when total passive losses, including carryovers, exceed total passive income. A closely held corporation compares passive losses to passive income plus net active income.
- Rental real estate can be treated as nonpassive for a closely held C‑corp if more than 50 percent of its gross receipts are from real property trades or businesses in which it materially participates.
- Items must first clear basis, at‑risk, and section 163(j) limits, then the passive rules apply. Consolidated groups compute PAL and credit limits on a group basis.
- As of January 28, 2025, the IRS shows no recent developments for Form 8810, and the 2024 instructions remain the operative guidance. Always confirm the latest before filing.
What Form 8810 Does, In One Page
Form 8810 answers four big questions for corporations subject to section 469:
- Do you have a passive activity loss this year, after applying basis, at‑risk, and interest limits.
- If yes, how much is allowed now and how much is suspended.
- Do you have passive activity credits, and how much of those credits can you use this year.
- If you disposed of an activity with unused credit property, do you want to elect to increase basis of that credit property.
The instructions make this explicit for both PSCs and closely held corporations.
Form 8810 is not optional when you have passive losses or credits in a PSC or closely held corporation. It is the calculator and the traffic cop that routes amounts to “allowed” or “carryforward.”
Attach Form 8810 to Form 1120 by the return’s due date, including extensions, when it applies. This is how you document which losses are allowed this year, which credits are usable, and which amounts roll forward.
Who Must File, Start With Your Corporate Type
Two corporate types use Form 8810. Confirm your status first, because filing thresholds differ.
Personal Service Corporation, The Quick Definition
You are a PSC if, during the testing period, your principal activity is performing personal services and those services are substantially performed by employee‑owners, and employee‑owners own more than 10 percent of the stock by value on the last day of the testing period. Typical service fields include accounting, health, law, engineering, architecture, actuarial science, performing arts, and consulting. The testing period is generally the prior tax year, with special rules for a new corporation.
For PSCs, Form 8810 is required when total passive losses, including suspended losses, are more than total passive income, or when passive credits exist.
Closely Held Corporation, The Quick Definition
You are closely held if more than 50 percent in value of outstanding stock is owned, directly or indirectly, by five or fewer individuals at any time during the last half of the year, and you are not a PSC. Ownership is determined using attribution rules.
For closely held corporations, you have a passive activity loss if total passive losses exceed total passive income plus net active income, which gives CHCs a limited ability to use active income to absorb passive losses. Form 8810 is required when that happens or when you have passive credits.
A Quick “Do We File?” Flow
- Do you have any passive activities, including carryovers from prior years.
- If yes, are you a PSC or a closely held corporation under the definitions above.
- If yes, compare losses and income using the CHC or PSC test.
- If the result indicates a PAL or if you have passive credits, you file Form 8810.
Up next, you will see how the limits work, where rental real estate can flip to nonpassive for CHCs, and the exact sequence to complete the worksheets without rework.
Passive Activity Losses and Credits, How The Limits Work
Start with the order of operations. Losses and deductions from passive activities must first clear basis, at‑risk, and section 163(j) limits. Only amounts that survive those rules flow into the PAL computation on Form 8810. This ordering matters, especially for real estate with interest expense.
- Basis limits, confirm equity and debt basis before any §469 math.
- At‑risk limits, see Form 6198.
- Business interest limits under §163(j), apply the limitation and carryforward.
Once those limits are applied, the form compares passive income and losses:
- PSC, PAL equals passive losses minus passive income.
- CHC, PAL equals passive losses minus the sum of passive income and net active income.
Consolidated group filer. Compute passive income, deductions, dispositions, net active income, and passive credits on a consolidated basis, then apply the PAL and credit limitations for the group.
Publicly traded partnerships are always special. Items from each PTP are walled off and must be applied separately. PTP losses generally offset only income from that same PTP, and suspended amounts carry forward until you have income from that PTP or you dispose of the entire interest in a taxable transaction.
Rental Real Estate, The Key Exception For CHCs
By default, rental activities are passive. That rule is so strong that material participation does not change the answer for most taxpayers. However, a closely held C‑corp can treat rental real estate as nonpassive if more than 50 percent of its gross receipts come from real property trades or businesses in which it materially participates. This is the corporate version of the real estate professional rule.
Two practical notes help here:
- Each rental is a separate activity unless you make a one‑activity election. You do that by attaching a statement to the original return under Reg. §1.469‑9(g).
- If an activity switches from passive to nonpassive this year, prior year unallowed losses become losses from a former passive activity and may be allowed to the extent of current year income from that activity.
If your CHC has material participation in real property trades or businesses and crosses the 50 percent gross‑receipts test, revisit your grouping and elections. A timely grouping statement can save review time and reduce suspended loss churn.
Passive Activity Credits, How The Ceiling Works
Credits tied to passive activities have their own limit. The corporation’s passive activity credit cannot exceed the tax attributable to net passive income. For a closely held corporation that also has net active income, the ceiling becomes tax attributable to the sum of net passive income and net active income. Any excess credit is suspended and carried forward. The Form 8810 instructions include a worksheet that walks you through this ceiling.
Quick Reference Table, Passive Credit Limits
| Entity | Limitation base | What happens |
| PSC | Tax on net passive income | Credit allowed up to this tax |
| CHC with net active income | Tax on net passive plus net active income | Credit allowed up to this tax |
| Either | Credit over the ceiling | Suspended and carried forward |
Source, Instructions for Form 8810, computation for line 7.
Basis Increase Election For Unused Credit Property
If you dispose of an activity and still have unused credits tied to that activity’s credit property, you may elect on Form 8810 to increase the basis of that credit property. This can improve the economics on exit, so make sure the team reviews Part III before finalizing.
Material Participation And Grouping, What Drives The Answer
Material participation is a facts‑and‑circumstances test based on hours and roles. Corporations look to shareholder participation and regulatory proxies to determine whether the corporation materially participates. For rental real estate, the CHC exception described above is the big lever. Without it, rentals remain passive even when the team is very active.
Grouping matters. By default, each rental is separate, and non‑rental trade or business activities are grouped based on appropriate economic units. If you want a single rental real estate activity, make the election under Reg. §1.469‑9(g) by attaching a statement to the original return. Late election relief may be available under Rev. Proc. 2011‑34.
How To Complete Form 8810 Without Rework
Here is a field‑tested sequence you can drop into your binder. It keeps review tight and reduces back‑and‑forth.
Step‑By‑Step
- Classify every activity
- Mark each passive, nonpassive, former passive, or PTP.
- Decide on grouping, especially rentals. Attach any Reg. §1.469‑9(g) statement if you aggregate rentals.
- Apply other limits first
- Basis, at‑risk, and §163(j) interest limits reduce what flows into §469. Document each step so reviewers can trace the math.
- Populate Worksheets 1 and 2
- The instructions require you to complete the worksheets before the form. Capture current‑year income and losses, dispositions, and prior‑year unallowed amounts by activity.
- Complete Part I
- Determine net passive income or loss. For CHCs, factor in net active income where applicable.
- Complete Part II
- Compute the passive activity credit limit using the instructions’ line‑by‑line computation for line 7.
- Review Part III
- Consider the basis increase election if you disposed of an activity with unused credits tied to credit property.
- Attach to Form 1120
- File with the return by the due date, including extensions. Keep the grouping statement with the original return when you elect to aggregate rentals.
Quick Process Table
| Step | Action | Purpose |
| 1 | Classify and group activities | Set the correct computational bucket |
| 2 | Apply basis, at‑risk, §163(j) | Ensure only allowable items enter §469 math |
| 3 | Complete Worksheets 1 and 2 | Roll activity‑level data up correctly |
| 4 | Finish Part I | Determine PAL or net passive income |
| 5 | Finish Part II | Compute the passive credit ceiling |
| 6 | Consider Part III | Elect basis increase on disposition if it helps |
| 7 | Attach to 1120 | Document allowed vs carryforward amounts |
Sources, Instructions for Form 8810.
Common Review Flags We See
- Net active income for CHCs not computed per the instruction’s definition, which excludes portfolio items and certain trading activities. Review the line 2 definition carefully.
- PTP losses netted with other passive income. PTPs are siloed and cannot offset other passive activities, except when you dispose of the entire PTP interest to an unrelated party in a taxable sale.
- Missing or late rental aggregation election. The statement must be attached to the original return.
- Former passive activity treatment skipped after a status change, for example when a CHC meets the real estate professional test.
A Simple Example To Ground The Rules
Assume your closely held C‑corp has two passive activities and one active division. After basis, at‑risk, and §163(j), Activity A has a 120,000 loss, Activity B has 70,000 income. Your net active income is 90,000.
- Aggregate passive income is 70,000, passive losses are 120,000, so the passive bucket shows a 50,000 loss.
- Because you are a CHC, you can absorb up to 90,000 of that loss with net active income. The result, no passive activity loss for the year, and nothing is suspended.
- If instead your net active income were 30,000, you would have a 20,000 PAL, which would be suspended and carried forward.
Consolidated Groups And Dispositions
On a consolidated return, compute passive income, deductions, dispositions, net active income, and passive credits by member, then aggregate to the group for the PAL and credit computations. If a member completely disposes of a passive activity, use the instructions’ rules to determine whether the overall result enters the worksheets or is reported directly on the other forms and schedules.
Filing Logistics, Revision Check, And Tools
- Attachment and timing. Attach Form 8810 to Form 1120, file by the due date including extensions. Keep any grouping election statements with the original return.
- Current revision. As of January 28, 2025, the IRS “About Form 8810” page lists no recent developments. Use the 2024 instructions unless the IRS posts updates. Always recheck before filing.
- Reference materials. Publication 925 remains the best plain‑English companion for passive rules, with cross‑references back to the Form 8810 instructions.
Software Notes
Most corporate suites can produce the form, for example UltraTax, CCH Axcess, ProConnect, Lacerte, and Drake. The software can assemble the pieces, but it will not fix grouping mistakes or compute net active income correctly for CHCs if the source tagging is off. Build a mini‑checklist inside your binder so the preparer, senior, and reviewer all confirm:
- Basis and at‑risk applied before §469.
- Grouping statements present when needed.
- PTP silo respected.
- Former passive activity logic applied when status changes.
Controls That Keep Review Time Low
Here is a simple control stack our team likes for passive activity reviews on corporate returns:
- A single index of all passive activities with IDs that match the binders.
- A one‑page summary that shows, by activity, current‑year result, prior suspended amounts, disposition status, and whether it is rental, non‑rental, or PTP.
- A standardized naming convention for workpapers and a version‑controlled folder for Worksheets 1 and 2, so reviewers can tie out without asking for screenshots.
- A standing note template for basis and at‑risk assumptions, so the §469 inputs are trustworthy.
If you need extra hands to keep production moving in peak season, use help that is integrated into your process, not just more resumes. At Accountably, we work inside your systems and templates, align to your SOPs, and protect review time with structured workpapers and multi‑layer checks. That matters on a form like 8810, where mis‑grouping or a missing election can snowball into avoidable suspended losses. Use us when you need capacity with control, keep the rest of your process as is.
Compliance Corner, Rental Real Estate Rules For CHCs
This is the one that often gets missed. A closely held C‑corp can treat rental real estate as nonpassive if more than 50 percent of its gross receipts are from real property trades or businesses in which it materially participates. If you meet that test, a timely grouping approach and a clean log of material participation can free up losses that would otherwise sit suspended. If you do not meet the test, rentals remain passive. Either way, document the conclusion in the binder.
When in doubt, do a short memo. Two paragraphs that state the test, the data, and the conclusion can save an hour of reviewer time and a week of back‑and‑forth near the deadline.
Frequently Asked Questions
What is Form 8810, in plain English?
It is the corporate calculator for passive activity losses and passive activity credits under section 469. PSCs and closely held corporations use it to determine how much is deductible now and how much carries forward, and to make a basis increase election tied to unused credit property on disposition. Attach it to Form 1120 when required.
Who must file Form 8810?
File if you are a PSC or a closely held corporation and you have passive losses or passive credits, including carryovers. A PSC has a PAL if passive losses exceed passive income. A CHC has a PAL if passive losses exceed passive income plus net active income.
Do S corporations or partnerships file Form 8810?
No. Individuals and owners use different rules and forms, such as Form 8582 for individuals. Form 8810 is for corporations that are PSCs or CHCs.
How do passive activity credits get limited?
Credits are limited to the tax on net passive income for PSCs. For CHCs with net active income, the limit is the tax on net passive plus net active income. Excess credits are suspended and carried forward. The instructions include a computation for line 7 that walks through the math.
Can a CHC treat rental real estate as nonpassive?
Yes, if more than 50 percent of gross receipts are from real property trades or businesses in which the corporation materially participates. If the test is met, rentals can be nonpassive, and prior suspended amounts may be addressed under the former passive activity rules.
How do I make the one‑activity election for rentals?
Attach a statement to the original return to elect to treat all interests in rental real estate as a single activity under Reg. §1.469‑9(g). Keep a copy with the workpapers.
What about publicly traded partnership losses?
Apply §469 separately to each PTP. Losses from one PTP generally offset only income from that same PTP, and suspended amounts carry until there is income from that PTP or a full disposition in a taxable sale to an unrelated party.
Where should I look for the latest updates?
Check the IRS “About Form 8810” page for the current revision and any developments, then confirm details in the 8810 instructions and Publication 925. As of January 28, 2025, the IRS lists no recent developments.
Conclusion
If you run a PSC or a closely held corporation, Form 8810 is your scoreboard for passive activity losses and credits. Classify and group activities correctly, clear basis and at‑risk first, respect the PTP silo, and use the CHC rental real estate exception when you truly qualify. Fill out Worksheets 1 and 2 before the form, double‑check the credit ceiling, and consider the basis increase election on disposition. Keep the documentation tight so reviewers can sign off quickly, and your future self will thank you when carryforwards reconcile cleanly next year.