If you identify each unrelated activity early, assign the right code, and allocate shared costs on a fair basis, the rest of Schedule A becomes straightforward, reviewers move faster, and audit questions get easier.
Key takeaways
- You attach Schedule A to Form 990‑T to report income and deductions for each separate unrelated trade or business. Prepare one Schedule A per activity, then move the results to the main return.
- The filing trigger is gross unrelated income of 1,000 or more for any activity, not net. You cannot offset one activity’s loss against another activity’s income under section 512(a)(6).
- If the combined total of all Schedules A, Part I, line 13, column A is 10,000 or less, you can omit most Part II detail, with specific exceptions noted by the IRS. Over 10,000, complete all applicable lines.
- Most filers must e‑file Form 990‑T with all Schedules A and required PDFs attached, per the Taxpayer First Act mandate.
- Keep clean activity codes. The IRS modernized e‑file requires a 6‑digit numeric entry. For NAICS‑based entries, use the first two digits and four zeros if you are not using a six‑digit NAICS.
Note, this guide reflects IRS sources reviewed through November 26, 2025. Always confirm instructions for your tax year.
What Form 990‑T Schedule A actually does
Schedule A is the per‑activity calculator that brings order to section 512(a)(6). You compute unrelated business taxable income, UBTI, one activity at a time, then only positive UBTI amounts make it to the main 990‑T. Losses stay in their lane for carryforward within that silo. This is the heart of the “separate trades or businesses” rule.
Inside each Schedule A you will:
- Use Part I to stack income, including sales, cost of goods sold from Part III, gains, partnership or S‑corp items, rents, debt‑financed amounts, investment and advertising income, and other unrelated items.
- Use Part II for deductions directly connected to that activity. Apply the 10,000 rule correctly so you do not over‑prepare or under‑support.
- Use Part III when you sell goods, so your inventory method and cost of goods sold are documented and tied to Part I.
Why the IRS insists on silos
The IRS wants clarity and comparability. Section 512(a)(6) forces you to identify distinct activities, compute UBTI separately, and avoid cross‑offsetting. That means cleaner codes, better documentation, and fewer gray areas during review.
Codes that match how you really operate
Use the most accurate 6‑digit entry on Item C of each Schedule A. The IRS modernized e‑file system requires six digits. For standard NAICS‑based entries, you can use the first two digits and add four zeros. For certain passive or investment categories, use the specific non‑NAICS codes in the instructions.
A quick reality check on delivery
Most firms do not struggle because they cannot win work, they struggle because delivery breaks during peak weeks. Partners get trapped in review loops, handoffs are messy, and documentation is thin. For 990‑T Schedule A, the cure is structure, not heroics. Standardize workpapers, enforce activity codes, and keep a one‑page allocation memo for each silo. If you later decide to add help, bring in capacity only after the process is disciplined.
Structure first, then people. That is how you keep Schedule A work predictable during busy season.
Who must attach Schedule A to Form 990‑T
If any unrelated trade or business in your organization has gross income of 1,000 or more for the year, you must file Form 990‑T and attach a separate Schedule A for that activity. This rule applies to public charities, private foundations, social welfare groups, trade associations, colleges, and similar exempt organizations. It also applies to trustees for IRAs, SEP and SIMPLE IRAs, Roth IRAs, HSAs, Archer MSAs, and Coverdell ESAs. Each account is treated as a separate trust, so the 1,000 test is applied per account.
A quick way to think about it. Do not ask, do we have net profit. Ask, did any activity bring in at least 1,000 of unrelated gross income. If yes, that activity gets its own Schedule A.
If you are filing only to claim a credit or a refund and you have no unrelated business income, you generally do not attach Schedule A. The filing still needs correct headers, signatures, and any credit forms.
Filing thresholds and smart shortcuts
Use this table when you are triaging which returns need Schedule A and how much detail they require.
| Situation | What you file | Schedule A needed |
| Any activity has gross unrelated income ≥ 1,000 | File Form 990‑T | Yes, one per activity |
| All activities have gross unrelated income < 1,000 | No 990‑T | No |
| Filing 990‑T for refund or elective payment only | File Form 990‑T | Only if you also have UBI |
| Sum of all Schedules A, Part I, line 13 is ≤ 10,000 | File as required | You can omit most Part II detail, with exceptions |
Remember, the 1,000 test is about gross income for each activity. The 10,000 rule changes how much of Part II you complete, not whether you need a Schedule A.
Separate trades or businesses, the silo rule in practice
Section 512(a)(6) requires you to compute unrelated business taxable income for each trade or business separately. You cannot use a loss from Activity A to offset income from Activity B. Losses live within their silo and carry forward there.
How you define a separate activity matters. Use your operations to guide the split, then choose the right 6‑digit activity code for each Schedule A. For many operating activities, the code is based on NAICS. For certain investment and passive categories, the instructions list specific non‑NAICS codes. Use them consistently year over year.
Tip, put the activity code and a two line description at the top of every workpaper set. Reviewers should know which silo they are in without guessing.
What to gather before you start
You will move faster when you build a packet for each activity that crosses the 1,000 threshold. Build once, reuse in review, and archive cleanly.
| Area | What to pull |
| Part I | Sales or service receipts, realized gains, K‑1s, rent statements, other unrelated income |
| Part II | Payroll by activity, officer time splits, benefits, rent, taxes, insurance, interest, depreciation support, Form 4562 tie‑outs |
| Part III | Beginning and ending inventory, purchases and returns, direct labor, chosen inventory method, costing support |
| Parts IV–VI | Property addresses, lease terms, depreciation, loan schedules, controlled organization ownership and payment detail |
| Parts VII–IX | Investment statements for 501(c)(7), (9), and (17), periodical advertising ledgers, readership allocations, exploited exempt activity worksheets |
Keep a one page allocation memo for each silo. Explain how you split shared costs between exempt work and unrelated work, and between unrelated silos. Attach timesheets, floor plans, and one period’s invoices with highlights.
Completing Part I, your income stack per silo
Work down the lines in order and keep a tie‑out next to each figure.
- Lines 1a to 1c, enter gross receipts and subtract cost of goods sold from Part III.
- Line 4, record capital gains or losses from business property.
- Line 5, include your share of unrelated items from partnerships or S corporations.
- Lines 6 to 8, add rents, unrelated debt‑financed income, and amounts from controlled organizations.
- Lines 9 to 12, include investment income, exploited exempt activity income, periodical advertising, and other unrelated income.
- Line 13, sum the activity’s total income.
Label workpapers to match these lines. If a number comes from a K‑1 or a rent schedule, show the source on the face of the binder. This small habit removes half of the review friction.
What counts as separate activities, simple examples
- A museum operates a public parking lot on weekdays and runs a gift shop. That is two silos, parking and retail.
- A university rents a theater to outside promoters and also sells program advertising. That is two silos, rental and advertising.
- A membership club publishes a periodical and sells display ads. The advertising is unrelated and is tracked within the periodical rules, not combined with a separate retail activity.
Keep descriptions short, clear, and matched to your code selection. Consistency year to year is your friend.
Completing Part II, deductions directly connected to the activity
Part II is where you record ordinary and necessary expenses that are directly connected to the unrelated trade or business on this Schedule A. If the combined total of all Schedules A, Part I, line 13, column A is 10,000 or less, the IRS lets you skip most of lines 1 to 14. If the combined total is above 10,000, complete all applicable lines.
Practical tips that cut review time:
- Officer compensation, show the time percentage tied to the unrelated activity when required and keep a short worksheet that matches payroll records.
- Employee benefits, rent, taxes, and interest, include amounts that belong to this activity only. Do not double count in other parts.
- Depreciation and amortization, tie amounts to Form 4562. Show asset IDs and the portion allocable to this activity. If depreciation belongs in cost of goods sold, reflect it in Part III and cross reference it here.
- Small stuff sinks ships, so add a one line reason why an expense is directly connected. For example, parking attendant wages tied to the weekday lot.
When in doubt, ask yourself, would we have paid this expense if we did not run this unrelated activity. If the honest answer is no, it is a good candidate for Part II.
Completing Part III, cost of goods sold in plain English
If you sell goods, Part III is mandatory. Choose your method, apply it consistently to beginning inventory, purchases, labor, and other direct costs, then record ending inventory. The result flows to Part I.
Inventory methods without jargon
- FIFO, first in, first out. In rising prices, it often shows lower cost of goods sold and higher ending inventory.
- LIFO, last in, first out. In rising prices, it often shows higher cost of goods sold and lower ending inventory.
- Specific identification, best for lower volume or unique items, tracks actual costs per item.
Do not switch methods mid‑year without disclosure. If you changed methods, explain the change in supplemental information and attach any required forms.
What belongs in COGS, what does not
Include only direct costs that are tied to the goods sold in the unrelated activity.
- Purchases and returns. Match to vendor invoices and receiving logs.
- Direct labor. Think production wages, not administrative payroll.
- Other direct costs. Inbound freight, packaging, or shop supplies used to produce or prepare items for sale.
- Depreciation. Include here when it is directly connected to producing the goods, and make sure it ties to Form 4562.
Do not bury general overhead in COGS. Keep those costs in Part II and allocate them on a reasonable basis.
Record beginning and ending inventory the same way
Beginning inventory usually equals last year’s ending number for the same activity and the same method. If it does not, explain the variance in supplemental information and show how you rebuilt the number. For ending inventory, document counts, costing, and any write‑downs. Keep a rollforward that shows beginning, purchases, adjustments, and ending. Numbers should tie to the general ledger.
Completing Part IV, rent income from real and personal property
Report each rental on its own line. Include the property address, a description of personal property rented with the real estate, and gross rentals. List directly connected expenses, including depreciation where applicable.
If a property is partly exempt use and partly unrelated, state the allocation method and support it with a one page memo. If ownership changed or use changed during the year, explain it briefly in supplemental information.
Common points that save time later
- Tie rent income to lease agreements and bank deposits.
- Tie depreciation to an asset schedule that lists cost, in service date, method, life, and current year amount.
- If subleases exist, separate them from the head lease support.
Completing Part V, unrelated debt‑financed income
When property is financed with debt, a fraction of the income, and a matching fraction of the deductions, is pulled into unrelated business income. That fraction equals average acquisition indebtedness divided by average adjusted basis for the year.
A simple walk through:
- Compute the ratio for the property.
- Apply the ratio to gross income from that property to find the unrelated piece.
- Apply the same ratio to directly connected deductions, including depreciation.
- Subtract the allocable deductions from the allocable gross income.
- Carry the net to Part I for this activity.
Keep a property level schedule for each asset with debt. Update the ratio every year. Store loan statements, basis rollforwards, and depreciation ties with this schedule.
If you hold multiple properties, do not blend ratios. Keep each property as its own mini file.
Parts VI to XI, special categories and key disclosures
- Part VI, controlled organizations. List each controlled entity, record income types such as interest, annuities, royalties, and rents, then compute the includible amount.
- Part VII, investment income for 501(c)(7), 501(c)(9), and 501(c)(17). Follow the line‑by‑line rules and keep account statements handy.
- Part VIII, exploited exempt activities. Describe the activity, show gross receipts, direct costs, and the net amount.
- Part IX, periodical advertising. Break out advertising by publication. Track direct advertising costs and readership allocations. Keep a worksheet that shows page counts and time splits.
- Part X, compensation of officers, directors, and trustees. Report the portion tied to this unrelated activity, and show time percentages where required. Do not repeat your Form 990 compensation schedules here unless they directly apply.
- Part XI, supplemental information. Use this to explain method changes, odd variances, and anything a reviewer would ask if they had five minutes.
Common errors and the fixes that actually work
- One Schedule A for everything. If you have more than one unrelated activity, you must silo them. Create separate codes, workpapers, and Schedules A. Do not net results across silos.
- Missing Part III detail. If you sell goods, you need method, inventory, purchases, labor, and other direct costs. Without these, Part I is off by default.
- Weak allocation logic. A short, dated memo that explains how you split shared costs beats a spreadsheet with unlabeled splits. Include evidence, such as timesheets or floor plans.
- Ignoring controlled organizations. Payments from entities you control can be taxable even when they look passive at first glance. Review ownership and control early.
- Codes that do not match reality. Use a 6 digit entry for each activity. Stay consistent year to year unless your operations change.
A review‑friendly workpaper index
- 00, Activity overview, code, description, and why it is separate
- 10, Part I tie‑out, references to Parts III to XI
- 20, Revenue detail, contracts, sales reports, K‑1s
- 30, COGS detail, method, rollforward, direct labor
- 40, Deductions, payroll splits, rent, interest, insurance
- 50, Depreciation and Form 4562, asset IDs and ties
- 60, Rents and debt‑financed schedules by property
- 70, Controlled organizations, ownership and payment support
- 80, Periodicals and advertising, readership allocations
- 90, Officer compensation for the unrelated activity, time splits
- 99, Supplemental statements for method changes or exceptions
Delivery and capacity, how to keep work on track
If you are feeling the squeeze, you are not alone. The most common blockers are review loops, inconsistent workpapers, and missing documentation. The fix is discipline.
- Use SOPs for how to prep each Schedule A.
- Standardize naming, versioning, and file logic.
- Run a two level review, preparer to senior, then quality review for risk areas.
- Set turnaround targets per activity type.
- Track work in a shared board so you can see bottlenecks and clear them.
If you need extra hands, consider help only after your workflow is stable. Accountably can plug trained offshore professionals into your existing systems with SOP driven execution, structured workpapers, layered review, and clear SLAs. Use this to add capacity without losing control or quality.
Capacity without structure creates chaos. Structure first, then people. That is how you scale Schedule A season after season.
E‑filing, attachments, and clean records
Most exempt filers must e‑file Form 990‑T. That means every Schedule A, every depreciation schedule, each credit form, and your supplemental statements go in the electronic package. Match the count of Schedules A to the checklist on the face of the 990‑T. Save the e‑file acknowledgment and keep it with your final workpapers.
A short checklist you can reuse:
- Threshold confirmed. Each unrelated activity with 1,000 or more in gross income has its own Schedule A.
- Codes validated. Each Schedule A shows a correct 6 digit activity code that matches the activity.
- Allocations documented. One page memo with evidence for each activity.
- Debt‑financed math done. Property by property ratios and tie‑outs.
- Part II treatment matched to the 10,000 rule. No missing lines where required.
- Attachments present. Form 4562, Form 3800 if credits apply, elections, and explanations.
- Signatures and e‑file ACK saved. Tie‑outs completed and bookmarked.
FAQs
Who must file Schedule A with Form 990‑T
Any exempt filer with 1,000 or more in gross unrelated income from an activity must attach a separate Schedule A for that activity. Trustees for IRAs and similar accounts apply the same test and file per account.
Can I offset one activity’s loss against another activity’s income
No. Compute UBTI per activity. Losses carry forward within their own silo and do not offset other silos.
Do I have to complete every part of Schedule A
Not always. If the combined total of all Schedules A, Part I, line 13 is 10,000 or less, you can omit most of Part II, with the exceptions the IRS lists. Over 10,000, complete all applicable lines.
Which code should I enter on Schedule A
Enter a 6 digit code. For many operating activities you will use NAICS based entries. For certain investment and passive categories, use the specific codes from the instructions.
What if I changed my inventory method mid‑year
Do not switch silently. Disclose the change, explain the effect, and attach required forms. Keep a method statement in your workpapers.
Final thoughts and a light offer of help
You now have a clear path. Confirm the 1,000 threshold, define your silos, gather activity‑level support, complete Parts I to III, handle rentals and debt‑financed property with care, finish the special sections, then e‑file with a clean attachment set. If you want a second set of eyes or seasonal production support, Accountably can help inside your systems with SOPs, structured workpapers, and layered review so you keep control and quality.
Important note
This guide is general education, not tax advice. Confirm details with your advisor and follow the latest IRS instructions for your tax year.