Open Enrollment Is a Pay Decision: Pricing Your Benefit Elections in Dollars

For most of my corporate career, open enrollment took me about four minutes. Log in, glance at the premium column, click “keep my current elections,” close the tab before the portal could ask me about pet insurance.

I would never have spent four minutes on a salary negotiation. And yet the Bureau of Labor Statistics puts benefits at 30.0% of total compensation for private-industry workers — $14.07 of every $46.89 an employer spent per hour worked in June 2026, and 31.5% for full-time workers (BLS, Employer Costs for Employee Compensation, June 2026). Part of that money is fixed. A surprising amount of it moves based on boxes you tick once a year and then, for most elections, can’t change until next year unless you have a qualifying life event such as a marriage, a birth or losing other coverage.

So this is the version I run now: five line items, each priced in dollars, in about an hour. It’s mechanics, not a recommendation — the right answer depends on your health, your household and your cash cushion, and nobody at a keyboard in Atlanta knows those better than you do.

Line item 1: the health plan, priced three ways

The premium column is the least informative number on the enrollment screen, because it’s the only cost that’s certain. The real question is what each plan costs across the years you might actually have.

For context on the stakes: KFF’s 2025 Employer Health Benefits Survey put the average family premium at $26,993, with workers paying $6,850 of it out of their paychecks, and the average single-coverage deductible at $1,886; 29% of covered workers were in HSA-qualified high-deductible plans (KFF, 2025 Employer Health Benefits Survey).

The method: for each plan, add your annual premium share to your out-of-pocket costs, subtract any employer HSA contribution, and do it for three scenarios — a light year, an expected year and a bad year that hits the out-of-pocket maximum.

Here’s a worked example with two illustrative self-only plans. The numbers are invented to show the method; pull yours from the summary of benefits and coverage your employer is required to provide.

Line item 2: the HSA, and why the payroll route is cheaper

If you choose an HSA-qualified plan, the IRS limits for 2027 are $4,500 for self-only coverage and $9,000 for family, up from $4,400 and $8,750 in 2026, and the minimum deductible for a qualifying plan rises to $1,750 self-only and $3,500 family (IRS, Rev. Proc. 2026-24). If you’re 55 or older, add $1,000. Your employer’s seed money counts toward the same cap — a detail that catches people who set their payroll election to the full limit and then get a $750 deposit on top.

Now the part the enrollment screen never explains. There are two ways to put money into an HSA, and they are not taxed the same.

Contributions you make through payroll, under your employer’s cafeteria plan, are treated as employer contributions — the Form 8889 instructions say so explicitly, and they show up in Form W-2, box 12, code W (IRS, Instructions for Form 8889). The IRS also states that qualified benefits under a cafeteria plan generally aren’t subject to FICA (IRS, cafeteria plan FAQs). Money you send to the HSA yourself from your checking account is deductible on your return — but by then, Social Security and Medicare tax has already been taken out of your paycheck, and the deduction doesn’t give it back.

Line item 3: the health FSA, and the break-even nobody prints

For plan years beginning in 2026, the health FSA limit is $3,400, and a plan that allows carryover can let up to $680 roll into the next year (IRS, tax year 2026 inflation adjustments). Some plans offer a grace period of up to two and a half months instead; a plan picks one approach or neither, so read yours. The IRS announced the 2026 figures in October 2025, and the 2027 limit arrives in the same annual release — your enrollment portal should show it.

Everyone knows FSAs are “use it or lose it.” Almost nobody runs the arithmetic on how sure you need to be before electing another dollar.

Each dollar you elect and spend saves you your combined tax rate on it. Each dollar you elect and forfeit costs you that dollar minus the tax you saved. Set those equal and the break-even probability is simply one minus your combined rate:

State income tax nudges the thresholds lower. The practical translation: build the election from expenses you can name — the recurring prescription, the scheduled crown, the glasses you replace every other year — and stop there. The last few hundred dollars of “just in case” is where the forfeitures live.

Line item 4: the 401(k) election hiding on the same screen

Many enrollment portals put the retirement contribution election in the same flow, and it’s worth a look even though it isn’t locked the way health elections are. The 2026 limit is $24,500, plus an $8,000 catch-up at 50 or older and $11,250 for ages 60 through 63 (IRS, November 2025 announcement); the 2027 numbers typically follow in November.

I’m not going to tell you what to contribute or where to invest it — that’s outside what this site does. The mechanical point is narrower and costs people real money: many plans calculate the employer match per paycheck. If you set a high percentage and hit the annual limit in September, your contributions stop — and so does the match on the last three months of pay, unless your plan does a year-end “true-up.” Whether it does is written in the summary plan description. Search that document for “true-up” before you pick a percentage. I priced match formulas in the beyond-base negotiation stack; this is the same money, leaking from the other end.

Line item 5: life and disability, the small-print lines

Two elections with tax consequences almost nobody connects to the checkbox:

Group-term life over $50,000. Employer-provided coverage beyond $50,000 creates imputed income: the cost of the excess coverage is added to your wages and is subject to Social Security and Medicare tax, shown in W-2 box 12 with code C (IRS Publication 15-B). Usually small dollars, but it’s why a pay stub can show “income” you never received.

Disability premiums. How you pay determines how benefits are taxed. Per IRS Publication 525, benefits from a plan your employer paid for — or that you paid for pre-tax — are generally taxable; benefits from a policy whose premiums you paid with after-tax dollars aren’t. If your employer offers an after-tax option, the question is whether a slightly bigger deduction today is worth a taxable benefit in the year you can least afford one. There’s no universal answer; there is a right question.

The one-hour ledger

This is the whole routine, in the order I run it: