Sell or Hold RSUs? What Kestrel Bay Retirement Advisors Tells Clients

Is holding a vested RSU the same as buying the stock?

Yes. When RSUs vest, the shares land in your account and the tax is triggered by that vest, not by any later sale. Many engineers we talk to hold vests because they think selling is what creates the bill. By the time you could sell, the bill already exists, and it's the same size either way.

Here's a cash test that cuts through it. Imagine your company paid this vest's value as a cash bonus. Would you spend all of it on company stock today? If the answer is no, then keeping the shares is exactly that purchase, made by default instead of on purpose.

Take Leah, a hypothetical 38-year-old single senior software engineer at a public cloud company. She rents and has never sold a vested RSU. Her employer stock is worth about $1.2 million of her $1.6 million net worth, three quarters of it, and every quarter of holding adds another lot to that pile.

Does selling RSUs right at vest cost more in tax?

No. Your cost basis is set at the share price on the vest date, so a vest-day sale at $200 on shares that vested at $200 produces $0 of gain. In the table below, notice that the $100,000 of W-2 income is identical in all three columns. Only the gain or loss after vest changes, and here that's plus or minus $15,000 after 13 months.

Holding for 13 months turns only that $15,000 change into long-term gain or loss. It never turns the $100,000 vest value into a long-term anything. Investing involves risk, including loss of principal, and the last row shows what the holding columns carry that the first one doesn't: 13 months of single-stock exposure.

Tax-first in practice: before Kestrel Bay Retirement Advisors suggests a sale, it pulls the lot list and estimates the gain on each lot, because the lot you sell decides the tax. Equity compensation planning is the broader service where we do this work.

Myths about selling RSUs, and what's true

Myth: holding postpones the tax. It doesn't. Vest income is taxed in the vest year no matter what you do with the shares afterward, and your employer's withholding at vest is already part of that.

Myth: waiting a year gets long-term rates on the whole value. Only growth after vest can become long-term gain. The vest value itself was ordinary income the day it vested.

Myth: selling the newest or the oldest shares costs the same tax. New lots have a basis near today's price, so the gain is small. Old lots that vested at $80 carry large gains, and which one you sell is the biggest tax lever you control.

Myth: your employer expects you to hold. Unless you're under stock-ownership guidelines or a blackout, you can generally sell when the trading window is open. Check your insider trading policy to be sure.

Leah's next vest: the newest shares versus the oldest

Hypothetical: Leah's next quarterly vest delivers 500 shares at $200. That adds $100,000 to her W-2 whether she sells or not. She also holds 500 shares from a vest three years ago at $80, and she wants $100,000 of cash to start diversifying.

Selling the new lot at $200 gives proceeds of $100,000 and a basis of 500 × $200 = $100,000, so the gain is $0. Selling the old lot at $200 gives the same $100,000, but the basis is 500 × $80 = $40,000, so the gain is $60,000, long-term. Same cash, $60,000 more taxable gain.

Here's the detail that catches people. If Leah places a sell order without naming lots, the IRS default of first-in, first-out picks the old $80 shares for her. She should set the brokerage account to specific lot identification before the order, then confirm the lot on the trade confirmation.

Yes, the old $80 lots still need a plan. Spreading them over several tax years is covered under our multi-year selling approach, and we'd rather do that deliberately than by accident.

How to decide at each vest, step by step

You supply the lot report and your plan documents. We estimate each lot's gain and write the sell plan down, so it isn't renegotiated every quarter. We'd rather clients sell a fixed share of every vest automatically, because a rule made in advance survives a stock that's just jumped 20%.

Our decision rule: if you wouldn't take the vest-day value in cash and buy your employer's stock with it today, sell newly vested shares at vest and name that lot. The gain is close to zero, so the sale adds almost no tax beyond the income you already owe.

• Download the lot report with vest date and vest price for every lot.
• Mark which lots are under or over one year, and which are above or below today's price.
• Run the cash test on the coming vest.
• Choose a share of each vest to sell on vest day.
• Decide in advance where the proceeds go: cash reserve first, then diversified funds.
• If you're an insider, set up a Rule 10b5-1 plan so sales happen during blackouts.

Mistakes that make holding RSUs expensive

The costliest one is holding vest after vest to avoid tax. If Leah's $100,000 vest falls to $170 a share, she has $85,000 of stock but still owes income tax on $100,000. A 30% drop across her $1.2 million position erases $360,000.

Selling with the FIFO default is the second. On $100,000 of proceeds, it turns a $0 gain into $60,000 of taxable gain.

A third is selling shares from an earlier vest for a loss within 30 days before or after a new vest. The vest counts as buying substantially identical stock, so the loss is disallowed as a wash sale for now. Tax-loss harvesting needs a calendar that includes your vest dates.

Last, waiting for the price to return to the vest price. That number has no tax meaning beyond setting basis.

The vest-day rule has limits. It doesn't solve old, low-basis lots, which need a multi-year plan, and insiders may be blocked by blackout windows or ownership guidelines. When company stock is a small part of your holdings and you'd happily buy it with cash, holding can be a reasonable choice. Concentrated stock positions are a separate topic we handle on their own.

What should you do before your next vest date?

This week, find the next vest date and the trading-window dates. Switch the account to specific lot identification. Run the cash test and write down what share of the vest you'll sell. Where the proceeds go matters too, and some clients later use Roth conversion planning or tax-efficient withdrawal strategy once the position is smaller.

Kestrel Bay Retirement Advisors works with clients across the country by video or phone. If you'd like help building a sell plan around your lots, use the request form, and we'll schedule an initial call to go through your lot report and next vest date.

• Vest date and share count known.
• Trading window open on that date, or a 10b5-1 plan in place.
• Lot method set to specific ID.
• Destination for proceeds chosen.
• Old low-basis lots flagged for a separate multi-year plan.