Sign-On Bonus vs. Base Salary: Don't Fall for the Lump Sum

Myth: A $25,000 sign-on bonus makes up for a $15,000 lower base.
Reality: The bonus pays once. The base gap repeats every year — and flows into your next raise, bonus target, and 401(k) match.

Myth: Sign-on bonuses are always yours to keep.
Reality: Clawback clauses are standard. Leave before 12–24 months and you may owe the full amount back, sometimes with interest.

Myth: Bonuses are taxed at a special lower rate.
Reality: Supplemental withholding often looks like 22% flat, but it all reconciles on your annual return. The timing hit to your cash flow is real even if the ultimate tax isn't higher.

• You're leaving unvested equity or a deferred bonus behind — the sign-on replaces sunk cost.
• The company has a hard base-salary band but a separate signing budget.
• You need cash for relocation deposits, moving costs, or bridging a gap between jobs.
• You're confident you'll stay past the clawback window.

When none of those apply, push for base instead. A $10k base increase on $150k is worth more than a $20k sign-on over a 3-year horizon once you account for match, raises, and the bonus disappearing in year two.