The Social Security Administration has not published any 2027 SSDI child benefit amounts, and it will not until roughly October 14, 2026, when it announces the annual cost-of-living adjustment (COLA). What is fixed is the rule: each eligible child of a disabled worker is entitled to up to 50% of that parent's primary insurance amount (PIA), and that entitlement is then cut back if the household hits the family maximum. In 2026, children of disabled workers receive an average of approximately $531 a month. If the 2027 COLA lands at 3.6%, the figure most forecasters are currently pointing at, that average rises to roughly $550. This page shows the confirmed 2026 baseline, the arithmetic that produces a child's payment, and a projection range for 2027 with the method spelled out so you can recalculate it yourself when the real number arrives.
The 50% Rule Is the Starting Point, Not the Answer
An SSDI child benefit is not a flat amount that SSA sets each year. It is a percentage of one specific parent's earnings record. Each eligible child is entitled to 50% of the disabled parent's PIA, which is the same figure as the parent's own monthly SSDI payment before any deductions.
Two things then happen to that 50% figure:
- The family maximum reduces it if the parent has more than one dependent on the record. The family maximum caps the total the household can collect, and the worker's own benefit is never cut, so the reduction falls entirely on the children and spouse.
- The COLA raises it every January, by the same percentage applied to every other Social Security payment.
That is why "how much is the SSDI child benefit in 2027" has no single answer. A child whose parent has a $1,000 PIA and no other dependents gets a very different number than a child whose parent has a $2,500 PIA and three siblings on the same record.
For the mechanics of the cap itself, including the 85%-of-AIME formula and projected 2027 bend points, see our SSDI family maximum 2027 projections.
Who Qualifies as a Child on an SSDI Record
Three categories of children can draw on a disabled parent's record. The eligibility rules are set in statute and do not change with the COLA, so these are the same in 2027 as in 2026.
| Category | Requirement | When it ends |
|---|
| Minor child | Unmarried, under age 18. Biological, adopted, or dependent stepchild | The month before the 18th birthday, unless a student or disabled |
| Student child | Age 18 or 19, unmarried, full-time student in elementary or secondary school (grade 12 or below) | At graduation, or two months after turning 19, whichever comes first |
| Disabled adult child (DAC) | Any age, unmarried, disability began before age 22, parent is receiving SSDI or retirement benefits or has died | Continues as long as the disability and the unmarried status continue |
A few points that trip people up. College does not count: the student extension applies only to elementary and secondary school, so a child who graduates high school at 18 and enrolls in college loses the benefit. Grandchildren and step-grandchildren can qualify in narrow circumstances, generally when both of the child's own parents are deceased or disabled and the grandchild is living with and supported by the grandparent. Marriage terminates the benefit in all three categories, with limited exceptions for disabled adult children who marry certain other Social Security beneficiaries.
The full 2026 eligibility rules, including the spouse side of the record, are covered in our SSDI auxiliary benefits guide. The disabled adult child rules, including the earnings test and Medicare access that apply only to that category, are covered in SSDI disabled adult child benefits.
The 2026 Baseline
These figures are confirmed and published. They are the starting point for every 2027 projection on this page.
| Category | 2026 confirmed figure |
|---|
| Child's entitlement rate | 50% of the parent's PIA |
| Average benefit, child of a disabled worker | approximately $531/month |
| Average disabled worker benefit | $1,630/month |
| 50% of the average disabled worker's PIA | approximately $815/month |
| Family maximum range | 100% to 150% of the worker's PIA |
| 2026 COLA already applied | 2.8% |
The gap between the $815 theoretical entitlement and the $531 actual average is the family maximum doing its work. Most SSDI households with children have either multiple children or a spouse and a child on the record, so the 50% entitlement is rarely paid in full.
Projected 2027 Child Benefit
The COLA is the only lever that moves an existing child benefit. As of early September 2026, the Senior Citizens League's tracking estimate for the 2027 COLA is 3.6%, revised down from 3.8% earlier in the summer as inflation readings cooled. AARP's estimate is close at 3.5%. Earlier in 2026, some analysts floated figures as high as 4.7%. The final number depends on CPI-W readings for July, August, and September 2026, and is locked only at the October announcement.
| Assumed 2027 COLA | Projected average child benefit | Projected 50% of average worker PIA |
|---|
| 2.8% (repeat of 2026) | approximately $546 | approximately $838 |
| 3.2% | approximately $548 | approximately $841 |
| 3.6% (current TSCL estimate) | approximately $550 | approximately $844 |
| 4.0% | approximately $552 | approximately $848 |
| 4.7% (high-end estimate) | approximately $556 | approximately $853 |
The spread across the entire plausible COLA range is about $10 a month on the average child benefit. That is worth knowing before you spend time refreshing COLA news: for a family already receiving benefits, the difference between the low and high forecast is small in absolute dollars. The number that actually determines your child's payment is the parent's PIA and how many dependents share the record, not which decimal the COLA lands on.
Worked Example: How the Cap Cuts the 50%
Take a disabled worker with a 2026 PIA of $2,026, which corresponds to an average indexed monthly earnings (AIME) of about $4,000. The disability family maximum formula gives this worker a family maximum of $3,039, which is 150% of PIA. Subtracting the worker's own $2,026 leaves a dependent pool of $1,013.
With one child:
Child's entitlement: 50% x $2,026 = $1,013
Dependent pool: $1,013
Child receives: $1,013 (full 50%, pool exactly covers it)
With two children:
Each child's entitlement: 50% x $2,026 = $1,013
Combined entitlement: $2,026
Dependent pool: $1,013
Each child receives: $1,013 / 2 = $506.50
With three children:
Combined entitlement: 3 x $1,013 = $3,039
Dependent pool: $1,013
Each child receives: $1,013 / 3 = $337.67
Now project forward. For a family already on the rolls, only the COLA applies. At 3.6%, the two-child household's per-child payment of $506.50 becomes approximately $524.73 in January 2027. The parent's own $2,026 becomes approximately $2,099. Nothing about the split changes.
For a family whose SSDI claim is first approved with a 2027 entitlement date, the projected 2027 PIA bend points also come into play. Using a projected first bend point around $1,340, that same $4,000 AIME produces a PIA of roughly $2,057, a family maximum of roughly $3,086, and a dependent pool of roughly $1,029, which splits to about $514.50 per child across two children before any COLA is layered on top.
What Actually Changes a Child's Payment
| Event | Effect on the child's monthly amount |
|---|
| Annual COLA | Raises it by the announced percentage each January |
| A sibling ages out at 18 | Raises the remaining children's payments, because the dependent pool is redistributed up to each child's 50% cap |
| A new child is added to the record | Lowers every dependent's payment if the pool is already fully allocated |
| The parent's spouse becomes entitled | Lowers the children's payments, since the spouse draws from the same pool |
| The child starts working | No effect for a minor or student child. There is no earnings test on a non-disabled child's auxiliary benefit |
| The parent returns to work above SGA | Can end the parent's SSDI entitlement, which ends the children's benefits with it |
| The child marries | Ends the benefit |
That second row is the one families most often miss. When an older sibling turns 18 and drops off the record, SSA recomputes the split and the remaining children's checks go up. It is automatic, but it is worth verifying on your next payment notice rather than assuming.
Why This Is a Projection and Not a Number
Every 2027 dollar figure on this page rests on two inputs SSA has not published:
The 2027 COLA. Computed as the percentage increase in the average CPI-W for July, August, and September 2026 over the same quarter in 2025. Two of those three months were not final when this page was written. If August and September inflation runs hotter than July's 3.4% CPI-W reading, the final COLA lands above 3.6%. If it cools, below.
The 2025 national average wage index. This sets the 2027 PIA bend points, which matter only for workers first entitled to SSDI in 2027. SSA releases it in the same October announcement.
Neither of those numbers can be known early. Anyone publishing a precise 2027 SSDI child benefit amount today is multiplying the 2026 figure by a forecast, which is exactly what the tables above do, with the forecast stated.
Timeline: When 2027 Figures Become Official
| Date | What happens |
|---|
| Mid-September 2026 | August 2026 CPI-W released, narrowing the COLA forecast |
| Mid-October 2026 | September CPI-W released; the three-month average is complete |
| October 14, 2026 (expected) | SSA announces the 2027 COLA, the 2025 national average wage index, and the 2027 PIA bend points |
| Late October 2026 | Figures published in the Federal Register |
| December 2026 | COLA notices mailed and posted to my Social Security accounts, showing each beneficiary's exact 2027 amount |
| January 2027 | New amounts appear in payments |
The December notice is the only document that tells you your child's actual 2027 payment. It reflects the COLA, the family maximum split, and any Medicare premium deduction on the parent's side, which no online projection can replicate.
What to Do Before the October Announcement
If your child is already receiving benefits, there is nothing to file. The COLA applies automatically and the family maximum split is recalculated by SSA.
If your child turns 18 between now and mid-2027 and is still in high school, watch for the notice SSA sends about three months before the 18th birthday. Benefits stop unless a Form SSA-1372 statement of attendance is certified by a school official and returned. This is the single most common way a family loses money it was entitled to, and it is entirely avoidable.
If you have a child who is not yet on your record, file now rather than waiting for a higher COLA year. Auxiliary benefits are generally payable for a limited retroactive period at best, and every month you delay is a month of the child's benefit you do not recover.
If your child became disabled before age 22 and is now an adult, apply as a disabled adult child rather than assuming the benefit ended at 18. That claim requires its own medical determination and can take months.
Frequently Asked Questions
How much is the SSDI child benefit in 2027?
SSA has not announced it. A child is entitled to 50% of the disabled parent's PIA, reduced by the family maximum. In 2026 the average child of a disabled worker receives approximately $531 a month. At a projected 3.6% COLA, that average would rise to roughly $550 in 2027. Official figures are expected around October 14, 2026.
Does every child get the full 50% of the parent's benefit?
Only if the parent has one dependent and the family maximum leaves room. With two or more dependents on the record, the 50% entitlements almost always exceed the dependent pool, and each dependent's payment is reduced proportionally. The parent's own benefit is never reduced.
When does the SSDI child benefit stop?
At age 18 for most children. If the child is a full-time student in elementary or secondary school at 18, payments continue until graduation or two months after the 19th birthday, whichever comes first. A child disabled before age 22 can continue receiving benefits as a disabled adult child indefinitely, as long as the disability continues and the child does not marry.
Does the child benefit go up when a sibling ages out?
Yes, if the family was hitting the family maximum. The dependent pool is redistributed among the remaining eligible dependents, up to each one's 50% cap. SSA recalculates this automatically, and the change should appear on the next payment notice.
Can a child receive SSDI on one parent's record and SSI at the same time?
Sometimes. SSI is needs-based and counts the SSDI child benefit as unearned income, so a child receiving a large auxiliary benefit generally will not qualify for SSI. A child receiving a small auxiliary benefit may qualify for a reduced SSI payment. Our guide to SSDI vs SSI for a child covers how the two interact.
Is the SSDI child benefit taxable?
The benefit belongs to the child, not the parent, so it is reported on the child's return if the child has enough total income to require filing. Most children receiving auxiliary benefits and no other income owe no tax on them. This is general information, not tax advice.
Do both parents' records count if both are disabled?
A child can be entitled on more than one parent's record but generally receives the higher of the two amounts, not both added together. SSA determines which record produces the larger payment.
Will the 2027 COLA affect a child who starts receiving benefits in 2027?
Yes, in the sense that the parent's PIA for 2027 already reflects the COLA. A new award computed with 2027 bend points and paid starting in 2027 uses the 2027 figures directly rather than receiving a separate increase.
Sources
- Social Security Administration, 2026 Cost-of-Living Adjustment Fact Sheet
- Social Security Administration, Benefits for Children (Publication 05-10085)
- Social Security Administration, Monthly Statistical Snapshot
- Social Security Administration, Benefit Formula Bend Points
- Social Security Administration, Automatic Determinations, Family Maximum
- Social Security Administration, Frequently Asked Questions for Students
- Congressional Research Service, Social Security: How Do Children Qualify for Benefits? (IF12069)
- The Senior Citizens League, COLA Watch, September 2026 estimate
- AARP, Social Security COLA Preview for 2027
All 2027 figures on this page are projections calculated from SSA's published formulas and current COLA forecasts. They are estimates until the Social Security Administration publishes the official amounts, expected in mid-October 2026.
