Dependent Care FSAs and the Child Tax Credit: What Survives a Physician Income

You already know what the number is. Two kids in full-time center care, or one infant plus an after-school program, and the monthly childcare bill sits somewhere between a car payment and a second mortgage. The Department of Labor's National Database of Childcare Prices tracks what care costs county by county, by the age of the child and by the setting, and in most metropolitan counties infant center care is the largest line in a young family's budget after housing.

Then April arrives and you find out how little of the federal relief aimed at families reaches you. It isn't the same story for every item. Some of these benefits carry an income phase-out and some don't, and the ones that don't tend to get the least attention. This is the kind of thing that gets sorted out inside a broader look at tax strategy for physician households, usually alongside the other decisions that pile up when a child arrives. If you're earlier in that stretch, the new-baby financial checklist for physician parents covers what tends to land first.

Here's each item, one at a time, and whether it survives an attending income.

The Dependent Care Account Is the One That Doesn't Phase Out

A dependent care flexible spending account (an employer benefit, elected once a year, funded by reducing your salary before taxes are calculated) is the outlier here. It has a hard annual cap and no income limit at all. Section 129 of the tax code, the provision that creates it, never mentions adjusted gross income. The cap is the same whether your household earns $150,000 or $900,000.

The cap itself changed for 2026. The Internal Revenue Service's Publication 15-B for 2026 states it plainly in its "What's New" section: the annual dependent care exclusion rose from $5,000 to $7,500, and from $2,500 to $3,750 for a married person filing separately. That's the first increase to the general limit in decades, and it isn't indexed to inflation, so it won't rise on its own.

The mechanics are worth being precise about, because "pre-tax" gets used loosely. Money you route into the account never shows up as taxable wages on your Form W-2. That reduces federal taxable income and comes out before Social Security and Medicare taxes are figured. Most states follow the federal exclusion, but a few don't, so the state piece is worth confirming for where you file. Attending compensation often sits above the Social Security wage base, the annual pay ceiling above which Social Security tax stops, in which case the payroll tax piece is generally the Medicare portion. Because it's an exclusion rather than a credit, what it's worth to you tracks your marginal rate instead of a fixed percentage.

The Earned Income Limit Behind the Cap

The $7,500 isn't the only ceiling. Section 129 also limits the exclusion to the earned income of the lower-earning spouse. If one of you has stepped back from work entirely, the exclusion may collapse to zero regardless of what you elected, and the money you routed into the account can end up back in taxable wages. If one of you is home with young children, this catches more households than you'd think, and it often surfaces in the same conversation as the spousal Individual Retirement Account for the stay-at-home parent, since both rules turn on which spouse has earned income.

There's an exception built in. A spouse who is a full-time student, or who is physically or mentally incapable of self-care, is treated as having earned income for each month the condition applies. The Internal Revenue Service instructions for Form 2441, the form where child and dependent care expenses are reported, set that deemed amount at $250 a month with one qualifying person and $500 a month with two or more. Only one spouse can use the deemed figure in any given month.

One more practical detail. The election is generally locked for the plan year and changes only on a qualifying event, such as a change in your care provider or in the cost of care from an unrelated provider. Whether unused money is forfeited at year end, or whether a grace period applies, depends on your plan document.

A Credit With a 20 Percent Floor

The Child and Dependent Care Credit is the second item, and it's the one that gets written about as though it just got better. In a sense it did. Beginning in 2026 the top credit rate moved from 35 percent to 50 percent. That change is unlikely to reach your physician household.

Here's how the rate works. Under Section 21 of the Internal Revenue Code, the applicable percentage starts at 50 percent and falls by one percentage point for every $2,000 of adjusted gross income above $15,000, stopping at a 35 percent shelf. Then it falls again, by one point for every $4,000 (or any fraction of $4,000) on a joint return, once adjusted gross income passes $150,000, and it stops for good at 20 percent. On a joint return that 20 percent floor arrives once adjusted gross income tops $206,000. Above that, the rate doesn't move. It's 20 percent at $210,000 and 20 percent at $1.2 million.

The rate is then applied to a capped amount of expenses, not to what you actually spend. Internal Revenue Service Publication 503 puts the ceiling for 2026 at $3,000 of eligible expenses for one qualifying person and $6,000 for two or more. Multiply those by 20 percent and the credit tops out at $600 or $1,200. For a household spending $35,000 a year on care, that's the whole benefit. Both spouses also need earned income, subject to the same deemed-income exception described above.

The Rule That Makes the Two Items Compete

This is the interaction that surprises people, and the reason the two items can't simply be stacked. Section 21(c) reduces the $3,000 and $6,000 expense limits by the total amount you exclude through the dependent care account. Not by a portion. Dollar for dollar.

Run the 2026 numbers through that rule and something changes. Under the old $5,000 cap, a household with two or more qualifying children still had $1,000 of expense room left over ($6,000 minus $5,000), which at a 20 percent rate produced a credit of $200. At the new $7,500 cap, a full election exceeds both the $3,000 and the $6,000 limits, so both drop to zero. If you elect the full amount for 2026, there may be no credit left to claim. The account replaces the credit rather than supplementing it.

Part III of Form 2441 is where this plays out. You report the benefits your employer provided, the excludable portion is figured, and that figure carries down and shrinks the expense limit used in Part II. Which of the two produces the better result in a given year depends on your marginal rate, your state, and how much of the account you can actually use, all of which your tax professional can run against your return.

Three Family Tax Items, Side by Side

Here's what each item is worth at attending income levels, whether your income touches it, and the detail that most often gets missed.

The Child Tax Credit and the $400,000 Line

The third item is the one that's most often written off too early. The Internal Revenue Service page on the Child Tax Credit sets it at up to $2,200 per qualifying child, with the full amount available when annual income is not more than $400,000 on a joint return or $200,000 otherwise.

What gets skipped is that $400,000 is where the phase-out begins, not where the credit ends. Above the threshold, the credit falls by $50 for each $1,000 of modified adjusted gross income (or fraction of $1,000) over the line. A single $2,200 credit takes 44 of those steps to reach zero, which means roughly $44,000 of income above the threshold per child. With one qualifying child on a joint return, some credit remains until modified adjusted gross income passes about $443,000. With two children, some remains until about $487,000. With three, about $531,000. The credit amount is adjusted for inflation in later years. The $400,000 and $200,000 thresholds are not.

There's a second detail hiding in the word "modified." For most households, modified adjusted gross income sits very close to adjusted gross income, which is what's left after your pre-tax payroll elections come out. Your 401(k) or 403(b) deferral reduces it. Your health premiums reduce it. So does the dependent care account. A household sitting a little over the threshold may find that elections made for other reasons also pull the number back toward the line, which is one reason benefits elections and tax projections tend to get reviewed together.

One eligibility mechanic is easy to overlook: the qualifying child needs a Social Security number, and the return has to carry one for the taxpayer as well.

Nondiscrimination Testing and the Election That Gets Cut Back

This is the part that catches people off guard, usually in October or November, in an email from a benefits department.

A dependent care plan has to pass annual nondiscrimination tests under Section 129(d), so that a plan doesn't end up serving mainly its best-paid people. Two tests matter here. The 55 percent average benefits test requires that the average benefit going to employees who aren't highly compensated be at least 55 percent of the average going to those who are. A separate concentration test limits how much of the plan's total benefit can go to owners holding more than five percent of the business.

The definition of "highly-compensated" comes from Section 414(q): more than five percent ownership, or prior-year compensation above an Internal Revenue Service threshold. Internal Revenue Service Notice 2025-67 sets that threshold at $160,000 for 2026, applied to your prior year's compensation. Most attending compensation clears it. Resident and fellow pay generally does not, since the test looks at the prior year.

The test compares averages, and that's what makes it hard for a hospital or a large medical group to pass. Employees who aren't highly compensated often elect less, since giving up several thousand dollars of take-home pay is harder on a lower salary. Physicians are more likely to elect the maximum. The higher that maximum goes, the further apart the two averages get, so the 2026 increase to $7,500 may make the test harder for plans already close to failing it.

When a plan fails, the consequence lands on the highly compensated group rather than on the employer. Plans commonly correct by reducing highly compensated elections before year end, which shows up as a mid-year cut to what you can contribute and a refund of the difference through payroll. If the failure isn't corrected during the plan year, the affected benefits may become taxable wages instead, which means a corrected Form W-2 and a tax bill you didn't plan for. Some employers head this off by capping highly compensated elections below the statutory amount at enrollment, so testing passes by design.

Questions that come up in planning conversations include whether the plan has passed the test in recent years, whether the employer pre-caps highly compensated elections, and what happened to physicians the last time testing came up short. Benefits departments can usually answer these. It's a detail worth knowing before the election rather than after, and it belongs in the same annual review as your other employer elections, including the health savings account decision physician households make at the same enrollment window.

Care for a Disabled Spouse or a Parent Who Lives With You

The word "childcare" narrows these rules in most people's minds more than the tax code does. A qualifying person under Publication 503 is not only a child under 13. Your spouse counts if that spouse is physically or mentally incapable of self-care and lived with you for more than half the year. So does anyone else incapable of self-care who lived with you for more than half the year, if that person is your dependent or would be except for the gross income test, the joint return test, or being claimed by someone else.

That opens the door to adult day services, in-home care during your working hours, and similar costs for a parent living in your household. The residence requirement is where most of these situations fall apart. A parent in their own apartment across town, or in assisted living, generally hasn't lived with you for more than half the year, and the expense may not qualify no matter what you're paying toward it.

Everything above still applies once the person qualifies: the same $3,000 and $6,000 expense limits, the same 20 percent rate at attending income, the same dollar-for-dollar reduction if you're also running a dependent care account, and the same earned income test. If you have both a child under 13 and a parent in residence, you're at the two-or-more-qualifying-persons limit.

Filing Separately Changes Both Numbers

Some physician couples file separate returns, often for reasons connected to income-driven student loan payments. That choice moves these items too. The dependent care exclusion drops from $7,500 to $3,750 on a separate return. The Child and Dependent Care Credit is generally unavailable to a married person filing separately, unless you meet the narrow conditions for being treated as unmarried: living apart from your spouse for the last six months of the year, maintaining a home that was the qualifying person's main home for more than half the year, and paying more than half the cost of keeping it up. The Child Tax Credit threshold falls from $400,000 to $200,000 as well. Those effects belong in the same calculation as the loan payment savings, a trade-off covered in more depth in the discussion of married filing separately for physician couples.

What Actually Survives

The dependent care account survives an attending income intact, and at $7,500 it's larger for 2026 than it has been in decades. The Child and Dependent Care Credit survives at its 20 percent floor, capped at $600 or $1,200, and may disappear entirely if you use the account for the same expenses. Some states run their own version of that credit on top of the federal one, which is worth checking where you file. The Child Tax Credit phases out, but not at $400,000 the way it's usually described, and a household with two or three children can be well into attending pay and still claiming part of it.

None of these items will change your financial picture on their own. What makes them worth understanding is that two of the three are decided once a year, in a benefits portal, on a deadline you may not have on your calendar.

That enrollment election is often a single box, open for a short window, and it sets the dependent care number for the next twelve months whether or not anyone walked you through how it interacts with the credit, the earned income limit, and your plan's testing history. If you'd like help fitting these pieces to your household's actual numbers rather than to the general case, our CFP® professionals work with physician families on exactly this kind of coordination, and you can start the conversation at physicianfamily.com/start.

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