MCG Service

Tax Season 2026: Your Comprehensive IRS Compliance Checklist for Small Businesses

Part 1: Tax Season 2026: IRS Compliance and Updates Series.

Asset Depreciation

Implement 100% bonus depreciation for qualified property. Property must be acquired after January 19, 2025. Restoration is permanent under the One, Big, Beautiful Bill (OBBBA).

  • Action Items:
    • Identify all MACRS property with recovery periods of 20 years or less.
    • Include computer software.
    • Include Qualified Improvement Property (QIP).
    • Include qualified sound recording productions.
    • Verify binding written contracts dated after January 19, 2025.
    • Apply depreciation on Form 4562.
    • Calculate potential Net Operating Loss (NOL) creation.

Utilize Section 179 expensing. Limits increased for 2026.

  • Specifications:
    • Maximum deduction: $2,560,000.
    • Phase-out threshold: $4,090,000.
    • Limit to taxable income.
    • Carry forward excess deductions.

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Income Deductions

Apply permanent Qualified Business Income (QBI) deduction. Section 199A sunset provision removed.

  • Compliance Steps:
    • Calculate 20% deduction for pass-through entities.
    • Audit W-2 wages and unadjusted basis immediately after acquisition (UBIA).
    • Check specialized trade or business (SSTB) status for high-income earners.
    • Link to internal resource: Maxing out your deductions.

Process Research & Experimentation (R&E) expenses. Update accounting for domestic and foreign expenditures.

  • Requirements:
    • Verify immediate expensing restoration for domestic R&E.
    • Amortize foreign R&E over 15 years.
    • Review Section 174 definitions for technical risk.

Information Reporting

Prepare 1099-NEC and 1099-MISC forms. Threshold updated for 2026.

  • New Thresholds:
    • Non-employee compensation: $2,000.
    • Miscellaneous income: $2,000.
    • Collect Form W-9 from all vendors.
    • E-file via IRS Information Returns Intake System (IRIS).

Monitor 1099-K reporting. Thresholds reverted for 2026.

  • Limits:
    • Gross payments: $20,000.
    • Transaction count: 200.
    • Reconcile third-party network transactions with bank statements.
    • Verify business vs. personal transaction categorization.

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Employer Credits

Claim expanded Employer Childcare Credit. Review facility and contract eligibility.

  • Credit Parameters:
    • Increase credit percentage for qualified childcare expenses.
    • Include resource and referral services.
    • Audit childcare facility certification.
    • Document 25% of qualified childcare expenditures.
    • Document 10% of qualified childcare resource and referral expenditures.

Manage Tip and Overtime reporting.

  • Procedures:
    • Report all tips over $20 per month.
    • Implement new overtime exemption tracking.
    • Apply new reporting requirements for service industry staff.
    • Link to internal resource: LLC compliance guide.

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Vehicle and Forms

Apply 2026 standard mileage rate.

  • Rate:
    • Business use: 72.5 cents per mile.
    • Charitable use: 14 cents per mile.
    • Medical/Moving use: 22 cents per mile.
    • Maintain contemporaneous logs.
    • Record date, destination, business purpose, and starting/ending odometer readings.

Submit Schedule 1-A.

  • Instructions:
    • Review "One, Big, Beautiful Bill" supplemental reporting.
    • Report aggregated benefit adjustments.
    • Attach to Form 1040 or Form 1065 as required.
    • Verify accuracy of tax year 2026 data.

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Checklist Summary

Download checklist: Ultimate 2026 Tax Checklist.

  • Verify 100% Bonus Depreciation.
  • Update Section 179 limits to $2.56M.
  • Confirm QBI Permanence.
  • Adjust 1099-NEC threshold to $2,000.
  • Adjust 1099-K threshold to $20k/200 transactions.
  • Apply 72.5 cent mileage rate.
  • Complete Schedule 1-A.