Glossary
Section 125 plan
An employer cafeteria plan under IRC section 125 that lets employees pay for benefits such as health premiums with pre-tax pay instead of taxable cash.
Also called: cafeteria plan, Section 125 cafeteria plan, premium-only plan, POP, flexible benefits plan
A Section 125 plan, or cafeteria plan, lets employees choose between taxable cash and certain qualified benefits. When they choose benefits, the amount comes out of pay before federal income tax and payroll taxes, so both employee and employer save on Social Security and Medicare tax. The simplest version is a premium-only plan, which lets employees pay their share of group health premiums pre-tax. Fuller plans add health and dependent care flexible spending accounts.
For 2026 the health FSA salary-reduction limit is $3,400, with a carryover of up to $680 if the plan allows it, and the dependent care FSA limit is $7,500, or $3,750 for married filing separately (IRS Rev. Proc. 2025-32; Publication 15-B).
The rules are strict. A written plan document is required, and without one the pre-tax treatment can be lost. Elections are made before the plan year and are irrevocable during it unless a permitted change in status or life event occurs and the plan allows the change. The plan must pass nondiscrimination tests, including that key employees receive no more than 25% of total benefits; a premium-only plan is generally deemed to meet the contributions, benefits and key-employee tests if it meets the eligibility test.
The common failure is paperwork: payroll deductions taken pre-tax with no adopted plan. The guide on Section 125 cafeteria plans: premium-only plans, FSAs and 2026 limits covers setup, and the health reimbursement arrangement and health savings account entries cover the accounts that sit alongside it.
Last reviewed October 10, 2026