What changed
- Mileage: 70 cents a mile for 2025.
- Bonus depreciation: 100% for qualified property acquired after January 19, 2025, with the old phase-down for property acquired earlier.
- Section 179: up to $2,500,000, reduced once property placed in service passes $4,000,000.
- Business interest: depreciation, amortization and depletion are added back to adjusted taxable income for 2025 (Form 8990).
- Car loan interest: personal use on Schedule 1-A, business share on Schedule F.
- Disaster relief: eligibility and filing rules for personal casualty losses from disasters were expanded (Pubs. 225 and 547).