Two Job Offers: Compare Total Comp, Not Salary

Tier 4 · Big Life Decisions · beginner · ~7 min read · incometaxesficaretirementsaving

The number on the offer letter is the wrong number

You have two offers in hand. One says $120,000, the other says $105,000. Easy call, right?

Not even close. The salary is the headline, and like most headlines it leaves out the part that changes the story. Two offers with the same salary can leave you thousands of dollars apart, and two offers with different salaries can quietly swap places once you count what the offer letter doesn’t:

• Taxes — a higher salary can push your top dollars into a higher bracket, so you keep less of each one than the raw gap suggests.
• The 401(k) match — free money your employer adds to your retirement, often 3–6% of salary. It never appears on the salary line, but it’s real compensation you’d be a fool to ignore.
• Your health premium — the slice of the insurance bill that comes out of your paycheck. It can differ by thousands a year between two employers offering the “same” coverage.
• Cost of living — $105,000 in a cheap city and $120,000 in an expensive one are not the same money. One stretches; one evaporates on rent.

Any one of these can be big enough to flip which offer wins. Stack them and the headline salary becomes almost noise.

From headline salary to what actually lands

Here’s the chain that turns an offer letter into real money:

1. Start with the salary. The headline.
2. Subtract taxes. Federal income tax (progressive brackets) plus FICA — Social Security and Medicare. What’s left is your take-home pay. (See Income & Take-Home Pay.)
3. Subtract your health premium. The monthly amount the employer pulls from your check for insurance, times twelve.
4. Add the employer 401(k) match. Money the company puts into your retirement when you contribute enough to capture it — counted here at face value as the compensation it is.
5. Adjust for cost of living. Divide by how expensive the city is (a national average = 100), so both offers are measured in the same purchasing power.

The result is the offer’s real, cost-of-living-adjusted value — the only honest basis for putting two offers side by side.

Things worth trying

• Watch the default. Offer A shouts the bigger salary — $120,000 vs $105,000 — yet Offer B’s solid bar ends taller. A pays more on paper, but B has a richer 401(k) match (5% vs 3%), a cheaper health plan, and a far cheaper city to live in. The faint ghost outline behind each bar is the headline salary; the solid bar is what it’s really worth. The two rank differently — that’s the whole lesson in one picture.
• Drag Offer A’s cost of living down to 100. Now both jobs are in equally affordable places, and A’s bigger salary reasserts itself. Location alone was carrying B. A huge share of a salary difference can be pure cost-of-living illusion.
• Crank Offer B’s 401(k) match to 10%. The green segment on B’s bar grows visibly. A generous match is a raise the salary line never shows you — and it compounds tax-deferred for decades.
• Give Offer A a $0 health premium. Some employers cover the whole premium; some make you pay $500+ a month. Over a year that’s a $6,000 swing in take-home — bigger than many “raises.”
• Make the two offers identical. The stat card reads “Too close to call,” and the note tells you the truth: when the money is a wash, the decision belongs to the things this sim can’t price — the work, the team, the growth, the commute, the life.
• Flip “Filing status” to married. Wider brackets mean less tax, so both offers’ real values rise. Your tax situation is part of the comparison too.

Why each hidden lever matters

Taxes don’t scale evenly with salary. Because brackets are marginal, the dollars of a higher salary that poke into a higher bracket are taxed more than your average rate — so a $15,000 salary edge might only be a $10,000 take-home edge. (This is the same math behind why your bracket isn’t your tax rate.) It rarely flips an offer by itself, but it shrinks every salary gap.

The 401(k) match is the most underrated line in any offer. A 5% match on a $105,000 salary is $5,250 a year of free money — money you get only if you contribute enough to earn it. Over a career, matched dollars compounding tax-deferred can be worth more than a chunk of base salary. An offer with a strong match and a slightly lower number can genuinely be the richer one. (More in Retirement Accounts & the Employer Match.) One catch the sim assumes away: you only get the full match if you actually contribute enough to capture it — so budget for that.

Benefits are compensation, not a footnote. The health premium is the easiest one to compare because it’s a flat monthly number, but the same logic covers HSA contributions, dental, vision, and more. A $300/month premium gap is $3,600 a year of after-tax money — and unlike salary, you don’t pay tax on premiums you don’t owe.

Cost of living decides what your money is worth, not just what it is. A dollar in a city with a cost-of-living index of 150 buys what about 67 cents buys at the national average. Comparing two salaries in two cities without adjusting for this is comparing prices in two different currencies. Relocation, remote work, and “we pay coastal salaries but you live inland” all live here — and it’s often the single biggest lever of the four.

The bigger paycheck and the better offer are frequently not the same job. The only way to know is to build the all-in number.

What the simulator leaves out (on purpose)

This is a teaching model. A few real factors are deliberately held aside so the core four stand out:

• State and local income tax is folded into the cost-of-living lever rather than modeled separately. A high-tax state effectively raises your cost of living — nudge that slider up to approximate it. (The tax math here is federal: income tax + FICA.)
• One-time and equity comp — signing bonuses, relocation packages, stock grants, and RSUs — can be large but are lumpy and company-specific. Value them yourself and add them to the picture; a signing bonus is real but doesn’t recur, while a higher salary does.
• The match is counted at face value as deferred-but-real money. It’s pre-tax retirement savings, not spendable cash this year — worth a lot, but not interchangeable with take-home pay dollar for dollar.
• Time off, schedule, growth, and the commute don’t show up in dollars here, even though they’re often the real deciders. When the money is close, those should break the tie — not the other way around.

The takeaway

• Never compare offers on salary alone. The headline number hides at least four levers — taxes, the 401(k) match, your health premium, and cost of living — any of which can flip the ranking.
• Build the real, cost-of-living-adjusted number for each: take-home pay, minus your premium, plus the match, scaled for where you’d live. That’s the apples-to-apples comparison.
• The 401(k) match and cost of living are the most common flip-makers — both are easy to overlook and both can be worth more than a several-thousand-dollar salary difference.
• When the all-in numbers are close, the money has spoken — let the non-money factors decide. The work, the people, and your life outside the job are worth more than a rounding error in real value.

Key terms

• Total compensation — the full value of a job: salary plus the employer 401(k) match, benefits, bonuses, and equity, net of the costs you bear. Always bigger or smaller than the salary, never equal to it.
• Take-home pay — what’s left of your salary after federal income tax and FICA. See Income & Take-Home Pay.
• Employer 401(k) match — money your employer adds to your retirement account when you contribute, commonly a percentage of salary. Free money if you capture it. See Retirement Accounts & the Employer Match.
• Cost-of-living index — a number (national average = 100) for how expensive a place is. Dividing your pay by it converts dollars into comparable purchasing power.
• Marginal tax rate — the rate on your next dollar. Why a higher salary keeps a smaller share of its top dollars. See why your bracket isn’t your tax rate.

A job offer is one of the biggest money decisions you’ll make, and it sets the baseline everything else compounds on. It builds on Income & Take-Home Pay (what’s really yours after tax), Retirement Accounts & the Employer Match (why the match is free money), and which dollar is worth most (a raise is taxed, a cut isn’t). Get the offer right and every later decision starts from a stronger number.