The 22% Number Nobody Explains When Your RSUs Vest

If you’ve had company stock vest this year, here’s a question worth thirty seconds of thought: do you actually know whether what your employer withheld covers what you’ll owe? Most people assume it does. It’s worth checking — because the way payroll systems handle equity compensation has a quirk built into it that most people never have a reason to look into, until they file.

A Flat Rate, Regardless of Reality

Here’s the mechanic. When RSUs vest, payroll systems are required to withhold a flat 22% federal rate on the first $1 million of supplemental wages each year — automatically, no matter what bracket you’re actually in. It’s not a mistake anyone made. It’s simply a rigid default.

If your income puts you in the 32%, 35%, or 37% bracket — which, at a certain income level, it usually does — that 22% default creates a real gap. And the gap doesn’t show up as a minor adjustment. It shows up the following spring, as a bill you didn’t budget for.

This isn’t a hypothetical. It’s arithmetic that plays out the same way every year for a specific, predictable population: people whose base salary and equity compensation together push them well past where a flat 22% withholding rate was ever designed to land.

The $1 Million Exception — And Why It Doesn’t Rescue You

There’s one wrinkle in this rule worth understanding precisely, because it’s easy to hear about and draw the wrong conclusion from.

Once your bonus and RSU income together cross $1 million in a calendar year, the withholding rate on the amount above that line jumps — automatically, no exceptions — to 37%. For that specific slice of income, the math actually works in your favor: withholding 37% on dollars that are almost certainly already taxed at 37% means that portion is essentially covered.

Here’s the part that’s easy to miss. That rule only touches the amount above $1 million. Everything below that line — which, for the large majority of people, is most of the vest — is still withheld at the flat 22%, no matter how high your real bracket climbs. The gap doesn’t shrink because this rule exists. It caps. It stops growing once you’re past the threshold, but it doesn’t undo what already happened on the first million.

So if you’ve had a vesting year large enough to wonder whether you’re now “covered” by this rule — you’re likely covered on the excess, and still exposed on the rest.

Where the Rest of the Money Goes

Here’s the part that compounds the first problem, and it’s the one almost nobody connects to the first.

If you’re already maxing your 401(k) — maybe running a mega backdoor Roth if your employer’s plan allows it — you’ve run the standard playbook well. None of that is in question. But once those accounts are full, the next dollar from every vest has nowhere structured left to go. For most people, it lands in a regular brokerage account by default, not because anyone decided that was the best place for it, but because there wasn’t another obvious option.

That’s where the second, quieter problem starts.

A Tax Most People Don’t Know Exists

Washington doesn’t have a state income tax. Most residents know that, and for a lot of people, it’s part of why living and working here makes sense.

But Washington does tax capital gains — 7%, rising to 9.9% above $1 million — on long-term investment gains above roughly $270,000 a year. This isn’t a proposal or something under debate. It’s been law since 2022, and it was upheld by the Washington State Supreme Court, which found it functions as an excise tax on the sale of an asset rather than a tax on income itself.

So here’s the full shape of the problem: RSUs vest, get taxed as ordinary income (the 22% gap above), and whatever’s left often sits in a brokerage account where it keeps growing — until it’s sold, at which point that growth can trigger a second Washington tax bill most people never saw coming, because they never connected “capital gains tax” to money that started as company stock.

What Most People Think Life Insurance Actually Is

Here’s where most people’s mental model runs into a wall, and it’s worth naming directly, because it’s not a knowledge gap that’s anyone’s fault.

Most people only know one kind of life insurance — the kind through work. You pay, and if you don’t die during the term, you get nothing back. That’s a completely accurate description of term life insurance. It’s just not the only kind that exists.

Think of it like renting versus buying. Term life is renting — you’re paying for protection during a specific window, and nothing carries forward once that window closes. There’s a different kind of policy that works more like buying: part of every payment builds something you actually keep. It’s called cash value, and it grows over time.

And here’s the part almost nobody hears: you can borrow against that value later, the same way a homeowner takes out a home equity loan against their house. Like any loan, that money isn’t taxed as income — because it isn’t income, it’s a loan — as long as the policy stays properly funded and stays in force. That qualifier isn’t fine print: if a policy lapses while a loan is outstanding, the IRS can treat the loan balance as taxable income after the fact. It’s a real mechanic worth understanding, not a footnote to skip past.

A Solution Worth Considering — the Good and the Bad

I want to be direct about something before describing any benefit: this kind of structure is funded with after-tax dollars. There’s no deduction. The income that funds it has already been taxed once, the same way every paycheck and every vest already has been. This isn’t a 401(k) replacement, and it was never meant to compete with one — that pre-tax space is already gone regardless of what happens next.

What it offers instead is different: growth without the annual tax drag a brokerage account carries, a contractual floor against market downturns, and — because a loan isn’t a sale — access to that value later without triggering the Washington capital gains exposure a brokerage sale would.

It’s also not liquid the way a savings account is. Plan on ten to fifteen years before you’d want to touch it, and there are real penalties for pulling it apart early. And here’s the part that’s easy to get wrong if nobody explains it clearly: every policy like this splits into two parts — the cost of the coverage itself, and whatever’s left over, which becomes savings. Load it up with a large death benefit and minimal funding, and most of every dollar pays for the coverage; barely anything is left to grow. Done right, it’s the opposite — a small death benefit and maximum funding, so most of each dollar goes toward what you’re actually building.

That’s not a caveat tacked onto the end of a pitch. It’s the actual mechanism, and it’s worth understanding before anyone tells you this is right for your situation — including me.

A Question Worth Sitting With

If you’ve had RSUs vest this year: do you know your real number? Not the 22% your employer withheld — the actual gap between that and what you’ll owe.

Most people don’t, until they’ve already filed. Worth checking before you’re one of them.

I’m Danli Wang, an independent, Washington-licensed insurance producer with over 20 years in corporate finance before this. I’m not a tax advisor, and nothing here should be read as tax or legal advice — for anything specific to your return, that’s your CPA’s job, and I’ll always tell you where that line is.

I built a short calculator that estimates your actual withholding gap in about a minute — see your own number here.