the rules that move the number
One paycheck, $150,000 a year, 25% into the 401K. The IRS allows $24,500. The match still comes in full, and the $13,000 over the line stays in your pay.
You asked for the link. It is below: the slides from the post, the move if there is one, and the planner the chart came from.
Where to go next
Type in one paycheck and it runs your plan through every year of market history since 1871, with the taxes worked out. About three minutes, in the browser.
Open itSources: Engine output. Federal, payroll and Colorado tax from the 2026 tables. Example plan, not a person.; IRS Notice 2025-67 and the IRS 2026 limits release. Married figures are for joint filers..