New job, first week, and HR sends over a stack of enrollment forms with words like 'elections' and '' and a deadline. If there's nobody at home who's filled these out before, the packet can feel like a test you never studied for. It isn't a test. It's five decisions, they go in a sensible order, and every one of them has a full guide on this site. This page is the map.

The deadline is real: most employers give new hires about 30 days to enroll. Miss it, and outside of big life events you generally wait for the annual open-enrollment window to fix anything.

Form 1: the (your paycheck's accuracy)

This one decides how much tax comes out of each check. For a single person with one job, the default is usually fine; get it wrong in either direction and you're giving up money now or owing it in April. How to fill out a W-4 walks every line.

Form 2: the health plan (the biggest bill)

Don't pick by alone; the and decide what a bad year actually costs you. How to choose a health plan gives you the honest comparison method, and if a high-deductible plan is on the menu, it may come with the below.

Form 3: the (the free-money line)

If your employer matches contributions, enrolling at least up to the full match is the single highest-paying choice in the packet: it's a 100% return on those dollars. What is a 401(k)? covers the mechanics, and a is a perfectly good first pick inside it. If money is genuinely too tight, start at 1% to 2% and raise it each raise.

Form 4: HSA or (the tax-free health money)

  • An HSA comes only with high-deductible plans, rolls over forever, and is yours for life. For 2026 you can put in up to $4,400 for self-only coverage. If you have one available, even $20 a paycheck builds a real medical cushion.
  • An FSA is use-it-or-lose-it by the deadline (plans may let a small amount carry over), so fund it only to what you'll genuinely spend on care, glasses, or prescriptions this year.

Form 5: the checkboxes people skip

  • : often free or cheap through work, and it protects the paycheck everything else depends on. The coverage nobody mentions explains why it matters more than for most young workers.
  • Life insurance: the free employer-paid base amount is worth taking; whether you need more depends on who depends on you. Do you even need life insurance? is the two-minute answer.
  • Beneficiary forms: fill them in. This decides who gets the money in your 401(k) and life insurance, and it overrides everything else.
  • Commuter or other pre-tax perks: nice if you'll truly use them; skip if not.

Done. Now check the first paycheck

Elections made, one last step: when the first full paycheck lands, read the stub and confirm the match what you picked. Payroll mistakes happen, and they're easiest to fix in week two, not month six. Then build the on the number that's actually arriving, starting with what to do with your first paycheck.

Tip
Big life changes (marriage, a baby, losing other coverage) reopen your benefits outside the annual window. If your situation shifts mid-year, ask HR about a 'qualifying life event' before assuming you're stuck.