The WriteupOS blog
Practical guides on transaction categorization, depreciation, deductions, entity types, and the actual workflow of write-up work — not the abstract theory.
Written by Connor McDonald, a tax preparer in Richmond, VA.
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A tax preparer's guide to the QBI deduction under Section 199A for 2026. Covers OBBBA's permanent extension, new 2026 thresholds ($201,750 single / $403,500 MFJ), expanded phase-in ranges, the $400 minimum deduction, SSTB rules, and the W-2 wage and UBIA limits.
A tax preparer's guide to vehicle expense deductions for Schedule C in 2026. Covers the 72.5¢ standard mileage rate, first-year election lock-in, §280F luxury auto caps, leased vehicle rules, and which bank statement transactions to flag for vehicle review.
A tax preparer's guide to the home office deduction in 2026. Covers OBBBA's permanent W-2 exclusion, simplified method vs. Form 8829, depreciation recapture traps, and which bank statement transactions to flag for home office review.
The OBBBA changed the rules on employer-provided meals starting in 2026. Here's the complete breakdown of which meal expenses are deductible and at what percentage.