RSUs and Tech Compensation: Reading, Taxing, and Not Fumbling the Equity

Last updated 2026-07-20

Equity has gone mainstream: RSUs now show up in offers far beyond Big Tech — mid-size software firms, banks, even retailers grant them. And most recipients manage five- or six-figure equity income with a strategy of "let it pile up and hope." This guide covers the whole lifecycle: reading a grant, the tax mechanics, the sell-or-hold decision, and how to compare job offers where half the pay is stock.

Reading a grant: the four numbers that matter

An RSU grant letter reduces to four facts:

1. Grant value and share count. "$200,000 over 4 years" granted when the stock is $100 means 2,000 shares. From that moment, the share count is fixed — the dollar value floats with the stock.
2. The vesting schedule. Standard is 4 years with quarterly vests; the old 1-year cliff (nothing until month 12, then a lump) is less universal than it was. Amazon-style backloaded schedules (5/15/40/40) pay dramatically less if you leave early — read the curve, not the total.
3. What happens on departure. Unvested RSUs are almost always forfeited. Vested shares are yours forever.
4. Double-trigger provisions (private companies): pre-IPO RSUs often need both time and a liquidity event to fully vest — a different risk profile than public-company grants, closer to a lottery ticket with a work requirement.

The tax mechanics in ninety seconds

On each vest day, the market value of the vested shares is ordinary income — W-2 wages, exactly like salary, with Social Security and Medicare. Your cost basis is set at the vest price; only movement after vest is capital gain or loss. There is no election, no timing trick, no AMT (that's stock options — a different instrument).

The operational trap is withholding: employers withhold the IRS flat supplemental rate of 22% (usually by auto-selling shares), while RSU recipients commonly sit in the 32-35% federal brackets. On $80,000 of annual vests, that's a five-figure hole discovered the following April — often with an underpayment penalty attached. The RSU tax calculator computes your exact gap; the fixes are extra W-4 withholding (which counts as paid evenly all year, even if added in November) or quarterly estimated payments.

The second trap is the 1099-B basis error: brokers frequently report sold RSU shares with a zero or blank cost basis. Filed uncorrected, you pay income tax on the same dollars twice. The correct basis — the vest-day value — is in the broker's supplemental statement. Every RSU holder makes this correction eventually; make it on purpose.

Sell or hold: the question with a default answer

Holding vested RSUs has zero tax benefit — the income tax was charged at vest regardless. Holding is simply choosing to invest that after-tax money in your employer's stock. So run the clarifying test: if the company had paid this vest in cash, would you buy company stock with all of it? Almost nobody says yes — which makes sell-on-vest the honest default. Same-day sales have essentially no capital gain (proceeds ≈ basis), so the tax return stays clean.

The case against holding is concentration with correlation: your salary, your unvested grants, and your portfolio all riding one ticker. The 40% stock drop scenario overlaps heavily with the hiring-freeze-and-layoffs scenario — income and assets failing together, the exact opposite of diversification. A deliberate, small position (5-10% of net worth, sized on purpose) is defensible; 60% of net worth in employer stock by inertia is how tech workers repeatedly relearn 2000 and 2022.

If you do hold, know what you're timing: shares held a year past vest get long-term capital gains rates on the growth only. On typical numbers that's a few hundred dollars of rate savings per $10,000 of gain — real, but never a reason to keep a concentrated position you otherwise wouldn't.

Comparing offers when half the pay is stock

Two offers: $180k salary, versus $150k salary + $160k RSUs over 4 years. The naive math ($190k/year total comp!) treats equity as salary. Adjust for three things:

• Vesting reality. Median tech tenure is ~2-3 years. Price the equity you'd plausibly collect, not the four-year total — especially against backloaded schedules.
• Volatility. The grant's share count is fixed; a 30% stock drop cuts the equity portion 30%. Public mega-cap RSUs deserve maybe a 10-20% haircut for risk; pre-IPO paper deserves 50%+.
• Refresh policy. Mature companies layer annual refresh grants so total comp doesn't cliff after year 4; startups often don't. Ask directly: "what does a typical year-3 refresh look like for this level?"

A defensible comparison: salary + (grant value × your realistic tenure fraction × a volatility haircut). The take-home pay calculator handles the cash side; the equity side is your honest guess, made explicit.

Building a life on lumpy income

The households that fumble RSUs usually made one structural mistake: budgeting on peak total comp. Grant values reset, stocks fall, refreshes disappoint — and a mortgage sized to last year's vest schedule becomes a problem. The durable pattern:

• Run fixed costs on salary alone. Housing, cars, tuition — all inside the cash paycheck. The budget calculator makes the split explicit.
• Treat vests as acceleration: tax set-aside first, then the financial order of operations — match, HSA, debt, index funds. Routed automatically on vest day, before the money starts feeling spendable.
• Watch lifestyle creep at refresh time. Every grant is a chance to re-anchor spending upward; the compounding alternative is what wins decades.

Treated this way, RSUs become what they actually are — a powerful, lumpy, somewhat unreliable raise — and the stock market's opinion of your employer stops being the stress that decides whether the mortgage gets paid.