Form 990-T Filing Checklist for Tax Year 2018 — Concise Guide
Overview
The 2018 Form 990-T reflects significant TCJA changes: a 21% flat corporate rate for unrelated business taxable income (UBTI), net Section 965 tax liability reporting on line 49, and modified NOL treatment. No Economic Impact Payment reconciliation, ACA shared responsibility, unemployment exclusion, or expanded charitable deduction provisions apply.
Eligibility and Tax Treatment
File Form 990-T if your tax-exempt organization (501(c), 408(e), 408A, 529(a), 220(e), 530(a)) has gross unrelated business income of $1,000 or more. Corporations pay 21% tax on UBTI; trusts use graduated trust rates per Form 1041 Schedule D. Verify exempt status and determine entity type (501(c) corporation, 501(c) trust, 401(a) trust, or other) to apply the correct rate.
Key Form Rules
All Part II deductions must be directly connected to UBTI. Charitable contributions are deductible only if paid from UBTI and subject to income limits; do not duplicate with exploitation or readership costs. Post-2017 NOLs are deducted on line 31; pre-2018 NOLs on line 35. Line 37 provides a general $1,000 specific deduction (exceptions apply, as per instructions). If multiple unrelated trades or businesses exist, complete Schedule M to allocate income and deductions.
Income Documentation and Reporting
Gather gross receipts, invoices, returns/allowances, Schedule K-1s from partnerships/S-corps, rental agreements (Schedule C), debt-financed property records (Schedule E), controlled organization records (Schedule F), and investment statements (Schedules G, I, J). List the number of separate UBTIs; describe the first activity and use Schedule M for additional activities.
Part I totals all income: gross receipts less returns; COGS from Schedule A; capital gains/Section 1231 gains with Form 4797; Schedule K-1 income; rental income (Schedule C); debt-financed income (Schedule E); controlled organization income (Schedule F); investment income (Schedules G, I, J); advertising income (Schedule J)—total on line 13.
Deduction Requirements
Part II lists deductions directly connected to UBTI: officer/director compensation (Schedule K), salaries and wages, repairs, bad debts, interest (attach supporting schedules), taxes and licenses, charitable contributions within limits, depreciation (Form 4562), depletion, deferred compensation, employee benefits, excess exempt expenses (Schedule I), and excess readership costs (Schedule J). Total on line 29.
UBTI Calculation
Line 30 = line 13 minus line 29. Deduct post-2017 NOLs on line 31; line 32 equals UBTI after post-2017 NOL. For multiple UBTIs, aggregate on line 33; add back disallowed fringe benefits on line 34; deduct pre-2018 NOLs on line 35; and calculate the subtotal on line 36. Apply line 37 specific deduction (generally $1,000). Line 38 is UBTI after all deductions.
Tax Liability
Line 39: Corporations multiply line 38 by 21%. Line 40: trusts use the trust rate schedule or Schedule D. Lines 41–43 add proxy tax (if elected), AMT for trusts, and other taxes (Forms 4255, 8611, 8697, and 8866 as applicable). Line 44 totals all taxes.
Credits and Net Tax
Line 45a: foreign tax credit (Form 1118 for corporations or Form 1116 for trusts). Line 45d: other credits (general business credit via Form 3800, prior-year minimum tax credit via Form 8801 or 8827). Line 45e: sum of credits. Line 46: tax after credits. Line 47: other taxes. Line 48: total tax.
Section 965 and Payments
Line 49: report net Section 965 tax liability paid (attach Form 965-A and Form 965-B if applicable for one-time repatriation tax). Lines 50a–50g: report 2017 overpayment credited to 2018, estimated tax payments, Form 8868 extension payments, backup withholding, small employer health insurance premium credit (Form 8941), and other credits/payments. Line 51: total payments. Line 52: estimated tax penalty (Form 2220 if applicable). Lines 53–55: balance due or overpayment; elect to credit overpayment to 2019 or request a refund.
Form Changes for 2018
Line 39 changed from graduated corporate rates to a 21% flat rate. Line 49 was added to capture the net Section 965 tax liability. Schedule M has been added for organizations with multiple unrelated trades or businesses.
Signature and Filing
Sign under penalties of perjury as an officer or authorized representative, and include your title and the date. Paid preparers must sign and provide their PTIN, firm name, EIN, address, and phone number. Attach all required schedules and forms. Verify filing address per IRS Where to File for 2018 Form 990-T. 501(c)(3) entities should not include SSNs.
Ten-Step Filing Process
- Verify exemption and determine entity type (corporation vs. trust).
- Collect income documentation (receipts, K-1s, rental/investment records).
- Identify and document all UBTIs (count and describe first, Schedule M for additional).
- Complete Part I income (lines 1–13).
- Complete Part II deductions with direct connection (lines 14–29).
- Calculate UBTI before NOL (line 30); apply post-2017 NOLs (line 31).
- Aggregate UBTIs, add back fringe benefits, apply pre-2018 NOLs, and apply specific deductions (lines 33–38).
- Compute tax liability: 21% for corporations or trust rates; add other taxes (lines 39–44).
- Apply credits and determine net tax (lines 45–48).
- Report Section 965 liability and payments, compute balance, obtain signatures, and file (lines 49–55).
Conclusion
This checklist ensures accurate Form 990-T completion for 2018, reflecting TCJA changes including the 21% corporate rate, Section 965 repatriation tax reporting, and updated NOL treatment. All deductions must be directly connected to UBTI, and Schedule M is required for multiple unrelated businesses. Proper documentation and signatures by authorized U.S. representatives are needed for compliance.
Need Help With Your Tax Filing?
If you’re missing tax documents or want to ensure the numbers you enter match IRS records, we can help.
We offer:
- Full IRS transcript retrieval (Wage & Income + Account)
- Professional tax form review
- Preparation & filing support
- Tax relief options if you owe the IRS
Call now before filing: (888) 260-9441
Fast transcript pull available
This checklist is for educational purposes only and does not constitute tax or legal advice. Always review official IRS instructions and consult a qualified professional for guidance.
