Tax Free Threshold 2025 For Seniors. Here’s a selection of key numbers to help with tax planning for 2025 and tax prep for 2024, plus. In 2025, the employee contribution limit for 401 (k) and 403 (b) plans increases to $23,500 for those under 50 (up from $23,000 in 2024).

If your income exceeds certain limits, some of your benefits could be. For 2025, returns normally filed in early 2026;