Budgeting for High Income Earners: A Reverse Budget for Families in California and Washington

By Kevin Luu, Co-Founder and Chief Learning Officer. Reviewed on 2026-09-30.

Budgeting for high income earners works best in reverse: decide your taxes and savings first, automate them on payday, and let the family spend what is left without tracking every coffee. At $750,000 to $3 million of W-2 income, the expensive mistakes are rarely in groceries. They are an under-withheld RSU tax bill, savings that sit in checking, and fixed costs that quietly grow to match each raise.

This guide walks through that order of operations for a two-income family in California or Washington, with a full worked example at $900,000 of income.

Why a line-item budget fails at this income

Category budgets (the 50/30/20 rule, zero-based budgeting, envelope apps) were built for households where the risk is running out of cash before payday. That is not your risk. A household at $900,000 in California typically loses close to 40% of gross pay to taxes before any spending decision is made, and a large share of pay may arrive as RSU shares rather than cash. A rule that says “spend 50% on needs” says nothing about either.

The problems we see in high-earning families with young kids are different:

• Tax timing. RSU vests are often withheld at the 22% federal supplemental rate while the family’s top bracket is 35% or 37% for 2026. The gap shows up as a balance due in April.
• Savings with no destination. Cash builds in checking because no one decided where it goes, then gets spent on the next renovation.
• Fixed-cost creep. Housing, childcare, private school and cars are each reasonable, but together they can lock in a cost base that only works if both jobs and the stock price hold.
• No time. Two demanding careers leave no evening for reconciling a spending app. A system has to run without weekly attention.

The reverse budget: five buckets in order

Instead of tracking where money went, decide where it goes before you see it. Fund these buckets in this order:

1. Taxes, including the gap. Estimate your true federal and state tax for the year, compare it with what payroll is withholding, and move the difference to a separate account each vest or quarter.
2. Automatic savings. 401(k) deferrals ($24,500 per person for 2026), backdoor Roth IRA contributions ($7,500 per person for 2026, since your income is above the Roth IRA limit), 529 plans and a fixed monthly transfer to a taxable brokerage account.
3. Fixed costs. Housing, childcare, school, insurance, car payments. Write the total down once a year.
4. Giving. A set annual amount, decided together, so generosity is a decision and not whatever is left in December.
5. Flexible spending. Everything else. Put it in one checking account and one card. If the account is not empty at month end, the system is working.

Only the last bucket needs any monitoring, and a glance at one balance each month is usually enough.

Worked example: a $900,000 household in the Bay Area

Assumptions (illustrative): married, filing jointly, two children ages 4 and 7, living in California. One parent earns $420,000 in salary and bonus at a biotech company. The other earns $280,000 in salary plus $200,000 of RSUs vesting during the year at a tech company. Total W-2 income: $900,000. Both max their 401(k). For simplicity we use the federal standard deduction, ignore California’s small standard deduction and credits, and leave out health premiums. Federal figures are for 2026; California brackets are the 2025 schedules, because 2026 schedules were not published when this was written.

Step 1: what taxes really take

Two things in this table change the budget. First, the family receives no Child Tax Credit: for 2026 it phases out above $400,000 of joint modified adjusted gross income and is gone for two children by $488,000. Second, the RSU tax gap. If the $200,000 of RSUs is withheld at the 22% federal supplemental rate while the family’s top bracket is 37%, roughly $27,000 of federal tax is still owed at filing: about $71,000 of tax on the RSUs (taxed mostly at 35% and partly at 37%) against $44,000 withheld. That $27,000 belongs in bucket one, not in the vacation fund. See IRS Publication 15 (2026) for the withholding rules.

Step 2: give every dollar of take-home pay a job

The $351,700 above is the true tax bill, so the $27,000 RSU gap is already counted in it. But because payroll under-withholds, the family actually receives about $526,300 in cash and shares during the year: the $499,300 above plus the $27,000 that will be owed at filing (assuming salary withholding is accurate). Bucket one holds that $27,000 until April.

The spending amounts are assumptions; your numbers will differ. What matters is the shape. Counting the 401(k), this family saves about $170,300 a year, or roughly 19% of gross income and 31% of after-tax income. That rate is set once, by automation, and does not depend on anyone remembering to transfer money.

The same family in Washington

Move the household to Seattle and the California income tax ($73,101) and SDI ($11,700) disappear for 2026. Washington instead charges the WA Cares long-term care premium of 0.58% of wages with no cap, about $5,220 here, and an employee Paid Family and Medical Leave premium of up to 71.43% of a 1.13% rate on wages up to $184,500 for 2026, at most about $2,978 for the two earners (WA Paid Leave). Net, the family keeps roughly $76,600 more per year. Two caveats for high earners: Washington will tax individual and joint AGI over $1,000,000 at 9.9% starting January 1, 2028 (WA Department of Revenue), and Washington’s 7% capital gains tax applies when long-term gains, such as from selling appreciated company stock held more than a year, exceed the annual standard deduction ($278,000 for 2025). A raise or a strong stock year can push this household over the 2028 line, so the budget should not assume the gap stays $76,600.

Budgeting strategies that fit a family with young kids

• Budget on base pay, save the variable pay. Run fixed costs and flexible spending off salary only. Treat bonuses and RSU vests as savings and tax money. If the stock drops or a bonus shrinks, the household does not feel it.
• Set a fixed-cost ceiling. A common guardrail is keeping fixed costs low enough that the family could cover them on one income for a year. With two young children and two careers, that is the real emergency plan.
• Use the benefits you already have. The dependent care FSA limit rose to $7,500 per household for 2026 if your employer’s plan adopted the higher limit, a way to pay for daycare with money that is pre-tax for federal income tax or after-school care. A mega backdoor Roth can add after-tax savings if one plan allows it, within the 2026 total 401(k) limit of $72,000 per person.
• Review once a year, not once a week. Each January, update the tax estimate, raise savings transfers with any raise, and check the fixed-cost total. That single meeting replaces most of the tracking a line-item budget demands.

Common mistakes we see at this income

• Treating the RSU withholding as the tax owed, then paying a large balance (and possibly an underpayment penalty) in April.
• Letting vested company stock pile up because no one decided whether to keep it, so one employer becomes both the paycheck and most of the net worth.
• Assuming the Child Tax Credit or a direct Roth IRA contribution applies. At this income, for 2026, neither typically does.
• Planning on Washington’s “no income tax” status lasting indefinitely.
• Spending a raise before deciding how much of it goes to savings.

Choosing help: what to look for in a planner

If you searched for financial planning services for high-income families, the main test is whether the adviser is paid only by you (fee-only), handles equity compensation and state tax, and can set up the automation above rather than just reviewing it. Our guides to what fee-only financial planners cost and what counts as a high earner cover the background. Our tax management and retirement and employee benefits services handle the withholding and savings pieces.

What to write down for your kids

Your children will see the house, the trips and the school. They will not see that you saved before you spent, or why you sold the company stock. As Kevin Luu puts it: “Your kids will inherit your money. Will they inherit your judgment?” Keep a one-page note each year: your savings rate, the one or two big money decisions you made, and why. By the time they are teenagers, that file is a better money lesson than any app. Our family governance work builds this into a FamilyKnowledge® Library.

FAQ

Does the 50/30/20 rule work for high income earners?

Not well. At $900,000 in California, taxes take roughly 39% of gross before the rule even starts, and much of the pay may arrive as RSU shares. Setting a savings rate first and capping fixed costs is usually more useful than splitting take-home pay into fixed percentages for needs, wants and savings.

How much should a high-income family save?

There is no single right rate. The worked example above saves about 19% of gross income, counting 401(k) deferrals, and about 31% of after-tax income. The right number for you depends on when you want work to become optional, what your housing costs, how many children’s educations you plan to fund and how concentrated you already are in employer stock.

Should I budget using my RSU income?

Generally, no. RSU value moves with the stock price and withholding is often too low. Most families are better off covering living costs from salary and treating RSU vests as money for taxes, savings and diversification. If the stock falls by a third, a budget built on salary does not change at all.

Your next step

This week, pull your last pay stub and your most recent RSU vest confirmation, and compare the federal withholding rate with your top 2026 bracket. That one number tells you how much belongs in bucket one. If you would rather have someone run the full picture, our Tax & Wealth Assessment starts there.

This is general education, and the right move depends on the family’s full picture.

Written by

Kevin Luu

Co-Founder and Chief Learning Officer, Bright Advisers

Kevin has advised high-income W-2 tech and biotech families since 2015, and leads the education-first Age Five Family Office from Brea, California.

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