Adoption Tax Credit 2027: $18,250 Projected, and the 2026 Form 8839

Families finalizing an adoption in 2026 are working with a Form 8839 that already looks different from the one filed a year earlier, and not only because of the usual inflation bump. The short answer: the adoption tax credit’s maximum amount is confirmed at $17,670 for 2026, up from $17,280 in 2025, and for the first time a slice of it — up to $5,120 per child — is refundable rather than limited by how much tax a family owes. For 2027, the same formula that already reproduces the confirmed 2026 numbers projects the maximum credit at $18,250 or $18,220, depending on one open data question, with the refundable floor landing at $5,280 either way. The IRS hasn’t published the 2027 figure yet, but the arithmetic behind it is already closed.

The statute behind the credit

The adoption tax credit lives at 26 U.S.C. § 23, and it treats two kinds of adoptions differently in a way that matters for how the numbers get used. Under section 23(a)(3), a special-needs adoption that becomes final in the year gets the full dollar limit automatically, regardless of what the family actually spent. Every other adoption is capped at whatever qualified expenses the family incurred, up to that same dollar limit. Section 23(b)(1) sets that limit at a $10,000 base amount, applied per child across all years combined — not per year — and section 23(b)(2)(A) begins phasing the credit out once modified adjusted gross income crosses a $150,000 base, closing out completely $40,000 above that. This site’s MAGI explainer covers how that income figure gets built for purposes like this one.

None of those base dollar amounts move on their own. Section 23(h)(1) indexes them for inflation starting from a calendar year 2001 baseline, and section 23(h)(2) rounds the result to the nearest multiple of $10 — not the nearest $5 or the round-down-only rule that governs some other inflation-adjusted figures in the tax code, but an ordinary round-to-nearest-$10. That’s a smaller, more forgiving rounding step than many provisions get, and it’s part of why the projected 2027 numbers below land as cleanly as they do.

The newest piece of the statute is section 23(a)(4), added by section 70402 of Public Law 119-21, the 2025 tax law. It provides that “so much of the credit allowed under paragraph (1) as does not exceed $5,000 shall be treated as a credit allowed under subpart C” — the technical way of making a portion of the credit refundable, meaning a family can receive it even if they owe little or no tax, rather than only being able to use it against a tax bill. That $5,000 refundable base has its own indexing rule, section 23(h)(3): it starts adjusting for tax years beginning after 2025, using calendar year 2024 as its baseline rather than 2001. That’s why 2026 is the first year the refundable amount is anything other than a flat $5,000, and why it has its own separate inflation trajectory from the main credit.

Checking the method against 2026

Before projecting a number the IRS hasn’t announced, it’s worth confirming the method against a number the IRS already has. Revenue Procedure 2025-32, section 4.04, set the 2026 adoption credit at $17,670 and the phase-out threshold at $265,080, with a refundable ceiling of $5,120. Running the underlying cost-of-living formula against a single window average in the range of 177.1105 to 177.1135 reproduces the unrounded values behind each of those: $17,671.85 for the credit, which rounds to $17,670; $265,077.76 for the phase-out start, which rounds to $265,080; and $5,118.32 for the refundable ceiling, which rounds to $5,120. All three match the confirmed figures exactly, along with the fifteen other 2026 figures this site’s 2027 IRS inflation adjustments tracker has already checked against the same window.

That same section 4.04 sets the section 137 employer-provided adoption assistance exclusion — the amount an employer can pay or reimburse for an employee’s adoption expenses without it counting as taxable wages — at the identical $17,670, with the identical $265,080 phase-out start. The two provisions, the credit and the exclusion, are indexed together and always carry the same dollar figures.

Why October 2025 splits this one

The twelve-month window behind all of these figures ends August 31 of the prior year, and the Bureau of Labor Statistics never published a CPI-U reading for October 2025 — data collection stopped during that year’s government shutdown. There are two ways to handle the gap: average the eleven months that were published, or fill it with an imputed estimate for the missing month. For some inflation-adjusted figures elsewhere in the tax code, that choice doesn’t change the final rounded answer. For the adoption credit, it does.

Using the eleven-month average, the unrounded 2027 maximum credit comes to $18,245.23, which rounds to $18,250. Using the October-imputed figure instead, the unrounded amount is $18,222.56, rounding to $18,220 — a real $30 difference in the final number. The phase-out threshold splits the same way: $273,678.39 (rounding to $273,680) on the eleven-month path versus $273,338.46 (rounding to $273,340) on the imputed path, a $340 gap. The complete phase-out point, which is simply the threshold plus the fixed $40,000 range, follows along: $313,680 or $313,340.

The refundable ceiling is the exception. Its unrounded values are $5,284.38 on the eleven-month path and $5,277.82 on the imputed path — close enough together that both round to the identical $5,280. So a family projecting their 2027 adoption tax situation today has one figure they can treat as settled, the $5,280 refundable ceiling, and two figures, the $18,250-or-$18,220 maximum credit and the $273,680-or-$273,340 phase-out start, that genuinely depend on a methodology question the IRS hasn’t resolved in public yet.

Two worked examples

The clearest way to see how these pieces fit together is to run them for an actual family.

A special-needs adoption finalized in 2026, MAGI $150,000. Because the adoption is for a child with special needs and finalized in the year, section 23(a)(3) allows the full dollar limit regardless of what the family spent, and this family’s income is well below the $265,080 phase-out start, so nothing reduces it. The credit is the full $17,670. Of that, $5,120 is refundable — payable even against a small tax bill — and the remaining $12,550 is nonrefundable, usable against tax owed with any unused portion carried forward. Project the identical situation into 2027 and the numbers move to a credit of $18,250 (or $18,220), a refundable portion of $5,280 either way, and a nonrefundable remainder of $12,970 (or $12,940).

A non-special-needs adoption with $20,000 of qualified expenses, MAGI $285,080. This family’s income sits above the phase-out start, so the credit gets reduced. For 2026: the excess over the $265,080 threshold is $20,000, and dividing that by the $40,000 range gives a fraction of 0.500. The credit is limited to the smaller of the $17,670 maximum or the $20,000 in expenses — that’s $17,670 — reduced by that same 0.500 fraction, leaving a credit of $8,835. The refundable portion is the smaller of $8,835 or the $5,120 ceiling, so $5,120 is refundable and $3,715 is nonrefundable.

Run the same family through 2027 at the same $285,080 MAGI, using the eleven-month figures: the excess over the $273,680 threshold is $11,400, and dividing by $40,000 gives a fraction of 0.285. The credit is limited to the smaller of the $18,250 maximum or the $20,000 in expenses — $18,250 — reduced by the 0.285 fraction, for a credit of $13,048.75, or $13,049 rounded to the nearest dollar. The refundable portion is the smaller of that amount or the $5,280 ceiling, so $5,280 is refundable and roughly $7,769 is nonrefundable.

The 2026 draft Form 8839, line by line

The IRS released a 2026 draft of Form 8839 on May 14, 2026, and its structure lays out exactly how the numbers above get built. Line 2 asks for the maximum adoption credit per child — $17,670 for 2026, versus $17,280 on the 2025 form. Line 3 subtracts any amount already claimed for the same child in a prior year, since the $10,000 base limit under section 23(b)(1) applies across all years combined, not fresh each year. Line 4 is line 2 minus line 3, and line 5 is the qualified adoption expenses actually paid. Line 6 takes the smaller of lines 4 and 5 — the mechanism that lets a special-needs adoption skip past the expense question and lets an ordinary adoption’s expenses cap out at the per-child limit.

Line 7 is modified adjusted gross income, and line 8 asks directly: is line 7 more than $265,080 (the 2025 form asked the same question at $259,190)? If so, line 9 divides the excess by $40,000, carried to at least three decimal places and capped at 1.000, and line 10 multiplies that fraction by line 6 to get the phase-out reduction. Line 11a is line 6 minus line 10 — the credit after phase-out — and line 11b is the smaller of line 11a or $5,120 per child, up from a flat $5,000 on the 2025 form. Line 11c totals the refundable amounts across all children, and that total becomes the refundable adoption credit reported on Form 1040 line 30 — money a family can receive even without enough tax liability to absorb it.

The remainder flows through the nonrefundable side. Line 12 totals line 11a across children, line 13 repeats the refundable total from line 11c, and line 14 is the difference — the nonrefundable portion before any carryforward. Line 15 adds in unused credit carried forward from prior years, and line 16 combines the two. Line 17 pulls a limit from the Credit Limit Worksheet, and line 18a is the smaller of line 16 or line 17: the nonrefundable adoption credit that goes to Schedule 3 (Form 1040), line 6c. Whatever doesn’t fit becomes a fresh carryforward to 2027 on line 18b. Part III of the same form covers employer-provided adoption benefits under section 137 separately, using the identical dollar figures. This site’s Form 1040 2026 draft line-by-line guide covers where line 30 sits among the rest of that year’s draft form.

Refundable, nonrefundable, and the difference it makes

The split between lines 11b and 18a is the practical heart of the 2026 change. Before section 23(a)(4) existed, a family with little tax liability — a young family early in their careers, for instance, or one that had just added significant childcare expenses — could see much of a large adoption credit go unused in the year it was claimed, sitting instead as a carryforward against future tax bills that might be years away. The refundable floor changes that calculation directly: up to $5,120 per child for 2026, or a projected $5,280 for 2027, comes back to the family regardless of what they owe, the same way the refundable portion of other credits functions. The remainder above that floor still works the old way — usable against tax owed, with anything left over carried forward to future years rather than lost.

That distinction is worth tracking child by child in a multi-child adoption, since both the $10,000 lifetime base limit and the $5,000 refundable base apply per child, not as a single household total. A family adopting two children in the same year runs the Form 8839 computation twice, once per child, before totaling the results on lines 11c and 12.

The calendar from here

Revenue Procedure 2025-32, which confirmed the 2026 figures, was issued in the usual fall window. The IRS hasn’t yet published the parallel revenue procedure for 2027, and until it does, the $18,250-versus-$18,220 and $273,680-versus-$273,340 splits described above remain genuinely open questions rather than settled numbers — unlike figures elsewhere in the tax code where the missing October 2025 data point turns out not to move the final rounded answer at all. Families weighing the timing of a pending adoption against these thresholds, or checking how the credit interacts with other family-related benefits, can also see this site’s 2027 Child Tax Credit projection and the 2027 IRS inflation adjustments tracker, which will carry the official adoption credit figures once the IRS publishes them.

Sources

• 26 U.S.C. § 23 — law.cornell.edu/uscode/text/26/23
• 26 U.S.C. § 137 — law.cornell.edu/uscode/text/26/137
• Rev. Proc. 2025-32, §§ 4.04, 4.18 (2026 adoption credit and employer assistance exclusion) — irs.gov/pub/irs-drop/rp-25-32.pdf
• 2026 draft Form 8839 (released May 14, 2026) — irs.gov/pub/irs-dft/f8839—dft.pdf
• 2025 Form 8839 — irs.gov/pub/irs-pdf/f8839.pdf
• Public Law 119-21, § 70402 (adding the refundable adoption credit under 26 U.S.C. § 23(a)(4)), as reflected in the Legal Information Institute’s amendment notes to 26 U.S.C. § 23
• Bureau of Labor Statistics, Chained CPI-U series SUUR0000SA0 — api.bls.gov/publicAPI/v2/timeseries/data/
• finbarrow, IRS 2027 inflation adjustments tracker — companion page for the shared CPI window