This is a compilation of the federal tax changes for the 2025 tax year (for tax returns filed in 2026), grouped by topic.
1) Inflation-indexed amounts for individuals
- Standard deduction
- Single: $15,300; Married filing jointly: $30,600; Head of household: $22,950.
- Section 179 expensing
- SUV cap $31,300.
- Bonus Depreciation
- 100% bonus depreciation applies automatically for qualifying purchases after 1/20/2025 unless opting out
- Qualified transportation fringes (monthly)
- Transit $315; Parking $315.
- Health & cafeteria plans (FSA)
- Health FSA salary-reduction max $3,300; permitted carryover $660.
- Standard mileage rates
- Business: 70.0¢/mile; Medical/Moving (active-duty military): 21.0¢; Charitable: 14.0¢ (statutory).
2) Key credits (amounts & thresholds)
- Child Tax Credit (CTC)
- Credit remains up to $2,000 per qualifying child; refundable ACTC cap = $1,700 for 2025. Phase-out thresholds unchanged: $200,000 single/$400,000 MFJ.
- Earned Income Tax Credit (EITC)
- Max credits: $632 (no kids), $4,180 (1 child), $6,928 (2), $8,046 (3+).
- Adoption credit
- Max $16,810; phase-out begins MAGI $252,150 and ends $292,150.
- Premium tax credit / ACA affordability
- Employer shared-responsibility “affordability” percentage for 2025: 9.02% of household income (safe harbor).
3) Specialized accounts (HSAs, IRAs)
- Health Savings Accounts (HSAs)
- Contribution limits: $4,300 (self-only), $8,550 (family); catch-up (55+) unchanged $1,000.
- HDHP minimum deductible: $1,650 (self), $3,300 (family); OOP max: $8,300 (self), $16,600 (family).
- IRAs and retirement plan elective deferrals
- IRA contribution limit: $7,000; IRA catch-up (50+) $1,000 (unchanged).
- 401(k)/403(b)/most 457(b) elective deferral limit: $23,500; age-50+ catch-up $7,500.
- Special SECURE 2.0 catch-up for ages 60–63 (plans that permit): $11,250 for 401(k)/403(b)/govt 457; $5,250 for SIMPLE.
4) Employer credits & mandates
- Work Opportunity Tax Credit (WOTC)
- Available for hires through Dec. 31, 2025.
- Paid Family & Medical Leave Credit (§45S)
- Extended through Dec. 31, 2025 (for qualifying employer-paid leave).
- ACA employer mandate affordability % (for 4980H safe harbors)
- 9.02% of household income; applies to affordability tests for employer coverage offered in 2025 plan year.
- QSEHRA statutory caps
- Annual max reimbursements: $6,350 self-only; $12,800 family.
- Fringe benefits
- Qualified transportation fringes: $315/month transit, $315/month parking.
5) Retirement plan changes
- Mandatory auto-enrollment for new plans
- New 401(k)/403(b) plans established after Dec. 29, 2022 must automatically enroll eligible employees for plan years beginning after Dec. 31, 2024 (i.e., 2025), with initial 3–10% deferral and annual auto-escalation to 10–15%.
For 2025 plan years before final regs apply, good-faith compliance is accepted.
- New 401(k)/403(b) plans established after Dec. 29, 2022 must automatically enroll eligible employees for plan years beginning after Dec. 31, 2024 (i.e., 2025), with initial 3–10% deferral and annual auto-escalation to 10–15%.
- Long-term part-time (LTPT) employee eligibility
- Requirement shortens to 2 consecutive years @ ≥500 hours/year (formerly 3), effective plan years beginning after 12/31/2024 (i.e., 2025). Extends to ERISA-covered 403(b) plans beginning 2025.
- Higher catch-ups at ages 60–63 (“super catch-up”)
- For 2025, catch-up limit is $11,250 (401(k)/403(b)/govt 457) and $5,250 (SIMPLE) for participants who attain age 60, 61, 62, or 63 in 2025. Separate “Roth-only catch-up for high earners” under §414(v)(7) was administratively delayed to 2026.
- Practical tax-prep effects for 2025 returns
- W-2 box 12 elective deferrals may reflect higher $23,500 limit and, for ages 60–63, possible $11,250 catch-up.
- New hires in auto-enroll plans may have unexpected deferrals affecting AGI and Saver’s Credit; ensure Form 8880 income limits are applied.
Quick reference: commonly-used 2025 amounts
- Standard deduction: $15,300 / $30,600 / $22,950 (S/MFJ/HOH).
- Mileage (business/medical/charity): 70.0¢ / 21.0¢ / 14.0¢.
- CTC refundable cap: $1,700 (credit still up to $2,000).
- EITC max (no/1/2/3+ kids): $632 / $4,180 / $6,928 / $8,046.
- HSA limit (self/family): $4,300 / $8,550; catch-up $1,000.
- IRA limit: $7,000; catch-up $1,000. 401(k) deferral: $23,500; regular catch-up $7,500; ages 60–63 catch-up $11,250.
- Health FSA max/carryover: $3,300 / $660.
- Transit & parking fringes: $315 / $315 (per month).
- QSEHRA caps: $6,350 / $12,800 (self/family).
- ACA affordability (4980H) for 2025: 9.02%.