California Equity Compensation CPA: 5 Questions to Ask First

California Equity Compensation CPA: 5 Questions to Ask First

A California equity compensation CPA earns the fee in the gap between what your employer withheld and what the state and the IRS will say you owe. That gap is rarely visible at vest or exercise. It shows up in the spring, and it is usually bigger for people who moved, who exercised options or who vested a large block in one year. Ask these five questions before you share a single grant agreement.

The numbering is a sequence to work through, not a ranking.

On the Sam's List partner roster, Doug Johnson CPA is a Los Angeles firm whose live profile lists Equity Compensation among its specialties, and it is the one written up below. Four other California partners are named under the methodology so the roster is complete. Doug Johnson CPA is a vetted Sam's List member and a paying member of our featured program; payment does not buy the language we use or its reviews. The full methodology is at the end of this post.

1. How Does Your California Equity Compensation CPA Handle Withholding That Falls Short?

Ask what the CPA does about under-withholding. Employers generally withhold on stock compensation at a flat supplemental rate, and for someone with a high salary the flat rate can be lower than the rate they will actually pay. The shortfall does not go away because the shares were sold to cover it.

A direct answer names a method: estimated tax payments timed to the vest dates, a change to paycheck withholding, or cash set aside at each event. A vague answer is a warning. The right choice depends on your total income for the year, so a good CPA asks for a year-to-date picture before suggesting anything.

The limitation: no plan removes the tax. Estimated payments and extra withholding only move the timing, and paying too much early costs you the use of that money.

2. How Do You Handle RSU Income Allocation After a Move?

This is the question that separates a general preparer from an equity specialist. Many states, California included, may tax equity income earned while you worked in the state even if you lived elsewhere on the vest date, and the allocation commonly follows the period between grant and vest. That makes RSU income allocation after a move a real calculation, not a footnote.

Ask the CPA how they would split the income if you moved into or out of California partway through a vesting period. Ask what dates and records they need. A confident answer mentions your work location and residency dates for each period, not just the address on your return.

The limitation: states differ in how they source equity income and in how they give credit for tax paid to another state. The CPA applies the rules to your dates, and the result can differ from what your payroll withheld.

3. How Does California Tax on Stock Options Change Your Exercise Plan?

California tax on stock options starts with the type of option. For nonstatutory options, the spread at exercise is generally treated as wages. For incentive stock options, the exercise can raise your federal alternative minimum tax, and California runs its own parallel calculation. California also does not offer a lower rate for long-term capital gains, so a sale that is taxed gently federally can look different on the state side.

Ask the CPA to model an exercise before you do one, not after. A good answer shows the federal and state result of exercising now, exercising in pieces and waiting, with the cash needed to pay the tax in each case.

The limitation: a model rests on assumptions about the share price, your other income and the rules in force. If the stock falls after you exercise and pay, the tax was real and the shares are worth less.

4. What Records Do You Need From Me?

A CPA who asks for records up front is not stalling. Equity tax mistakes tend to come from missing paperwork. Expect a request for your grant agreements, vest or exercise confirmations, your Form W-2, any Form 3921 or 3922, the broker's Form 1099-B, and a note of where you lived and worked during each vesting period.

Ask specifically about basis. At vest, the value of the shares is already in your pay, and that value is generally your cost basis. A Form 1099-B can show a basis of zero or leave basis blank, and a return built straight from that form can count the same income twice. A CPA who raises this without being prompted has seen it before.

The limitation: records you do not have are hard to rebuild. Your employer's equity portal and the broker's history are the usual sources, and some portals drop history when you leave the company, so download it while you can.

5. What Is Included, What Is Not, and What Are Your Minimums?

Scope is where expectations split. Some firms prepare returns only. Others plan during the year, model exercises and answer questions at each vest. The two cost different amounts, and the difference matters most in a year with big equity events.

Ask whether you get a planning call before each vest, what happens if you move mid-year and whether state returns for more than one state are included. Ask about minimums too. Firms that focus on higher incomes often set a floor, and it is better to learn it in the first call.

The limitation: a price quoted before the CPA has seen your equity records can change once they do. Ask for the scope in writing and ask what would change it.

Where Doug Johnson CPA Fits as a California Equity Compensation CPA

Doug Johnson CPA is based in Los Angeles, serves clients nationwide and was founded in 2024. It has 3 employees and lists minimums of $250,000 in income and $250,000 in revenue. Its live profile positions the firm for growing businesses with $250,000 to $10 million in revenue and for high earners with equity compensation, and lists Equity Compensation, Growing Companies and HENRYs (High Earners, Not Rich Yet) as specialties.

Doug Johnson CPA has 15 verified client reviews on Sam's List as of 2026-11-03. Each review is submitted by an individual who identifies as a client of the firm and rates it on communication, subject-matter knowledge, and overall satisfaction. Reviews reflect those individual experiences and do not represent an endorsement by Sam's List. Doug Johnson CPA is a paying member of our featured program, and payment does not buy its reviews. Ratings and rankings are not indicative of future performance or results.

The limitation, plainly: the profile does not mention California part-year allocation, option modeling or any particular equity plan by name, so ask how each of the five questions above would be handled. Check the minimums against your own income before you call.

Frequently Asked Questions

What does a California equity compensation CPA do?

A California equity compensation CPA prepares and plans for income from RSUs, stock options, ESPPs and similar grants. The work covers withholding gaps, state allocation after a move, option exercise modeling and basis reporting. Scope varies by firm, so confirm what is included and what it costs.

Is California tax on stock options different from federal tax?

It can be. California has its own alternative minimum tax calculation and taxes capital gains at ordinary rates, with no lower long-term rate. Federal and state results for the same exercise can therefore differ. A CPA should model both before you exercise, using your own income.

How is RSU income allocated when you move out of California?

Generally, a state may tax the part of RSU income earned while you worked there, based on the grant-to-vest period, even if you lived elsewhere at vest. States differ on the details and on credits for tax paid elsewhere. Keep your move date and work locations for each period.

When should I talk to a CPA about equity compensation?

Before a large vest or an exercise, not after. A CPA can only change the outcome while a decision is still open. Bring your grant agreements, recent pay stubs and an estimate of your income for the year.

Before you call anyone, gather your grant agreements, vest and exercise confirmations, your Form W-2 and the broker's Form 1099-B. You can browse accountants on Sam's List, including the firm above, and ask each which of the five questions it answers best.

How We Picked This Firm

You should be able to check our work, so here is how this post was built.

The pool. The pool is the Sam's List partner roster for California. As of the roster's last update on September 14, 2026, five California partners are on it. The one firm written up here is Doug Johnson CPA, because its live profile lists Equity Compensation among its specialties and it is in our featured program. The other four are named and linked here and not written up: Ever Ledger in Los Angeles, Bull Oak, an advisory firm in San Diego, Olarry in San Jose and Good Operator in West Hollywood. Naming a firm is not a recommendation or a statement about its fit. This is not a survey of every California firm that handles equity compensation, and many firms outside the roster could fit. The roster is a snapshot from that date, so firms added since may not appear.

How it is organized. The five questions are a sequence to work through, not a ranking. Only one firm is written up, so there is no order of firms.

What review counts mean here. We cite the written-up firm's verified review count and its date from its profile. A count shows how many clients wrote something down. It does not measure technical quality.

What payment does and does not buy. Listing on Sam's List is free, and so is being named in this article. The firm written up here is a paying member of our featured program, which is why it gets a write-up. What payment does not buy is the language we use about a firm, its review count, or a promise that it fits you.

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About the author: Kimberly Green is the cofounder of Sam's List, where business owners and high earners find vetted CPAs, financial advisors, and fractional CFOs. She's met one-on-one with 400+ financial professionals and writes from the real data behind thousands of client-advisor matches. Ask her anything about finding an accountant - she's heard it all, including the questions people are afraid to ask.