Your first Social Security check with the 3.6% cost-of-living adjustment lands in January 2027, and the exact day depends on your birthday. Most people are paid on Wednesday, January 13, 20 or 27. But if you receive SSI, or you have been paid on the 3rd of the month since before May 1997, your January money arrives early, on Thursday, December 31, 2026.
That December 31 date catches people out every year. It is not a bonus payment and it is not a mistake. January 1 is a federal holiday and January 3 falls on a Sunday, so the Social Security Administration moves the payment to the last business day before it.
When your January 2027 payment arrives
The rule is simple and it has not changed. Your birthday decides your Wednesday. If you were born on the 1st to the 10th of the month, your January payment arrives on Wednesday, January 13, 2027. Birthdays on the 11th to the 20th are paid on Wednesday, January 20. Birthdays on the 21st to the 31st are paid on Wednesday, January 27.
Two groups are different. SSI recipients get their January payment on Thursday, December 31, 2026, because SSI is normally paid on the 1st and January 1 is a holiday. The same date applies to people who started Social Security before May 1997, or who receive both Social Security and SSI, because their payment is normally due on the 3rd. For the full picture of how the raise works, see our guide to the Social Security COLA for 2027: https://northchecknews.com/social-security-cola-2027/
If your payment does not arrive on your date, wait three mailing days before contacting the Social Security Administration. Direct deposits almost always land on the scheduled day, but paper checks can take a few days longer.
What the 3.6% COLA is actually worth
The Social Security Administration announced a 3.6% cost-of-living adjustment on October 14, 2026. It is the biggest raise since the 8.7% jump in 2023, and it is noticeably better than the 2.8% increase that landed this year.
For the average retired worker, the increase is worth about $75 a month. The average retirement benefit rises from about $2,095 to about $2,170 a month from January 2027. The maximum benefit at full retirement age rises to $4,188 a month. The full set of 2027 figures, including the higher wage cap and earnings limits, is in our breakdown of the Social Security 2027 numbers: https://northchecknews.com/social-security-2027-numbers/
One detail worth knowing: the COLA applies to benefits payable for December 2026, and Social Security pays a month behind. That is why you see the increase in the January payment, not in a December check. December’s payments follow the December 2026 schedule: https://northchecknews.com/social-security-december-2026-payment-dates-cola/
The December 31 payment is not extra money
Because the January SSI payment lands on December 31, SSI recipients get two deposits in December 2026 and none dated in January 2027. The same pattern repeats in April, July and December 2027, when two SSI payments arrive in one month.
Do not budget the December 31 deposit as a bonus. It is January’s money, paid early. The federal SSI maximum for 2027 is $1,029 a month for an individual and $1,544 for a couple, but those are maximums before countable income and state supplements, so most people receive less. Our SSI guide explains how the amount is worked out: https://northchecknews.com/ssi-amount-2026/
Watch the Medicare deduction before counting the raise
The one number still missing is the 2027 Medicare Part B premium. The Centers for Medicare and Medicaid Services had not announced it as of November 8, 2026. The Medicare Trustees project about $209.50 a month, up from $202.90 in 2026, but that is a projection, not a final figure. The official announcement is expected in mid-November.
If the $209.50 projection holds, the average retiree keeps about $68 more a month after the Part B deduction, roughly $820 over the year. If the final premium comes in higher, the net gain shrinks. Check your COLA notice before assuming the full $75.
What to do now
Your personal COLA notice will be available in your my Social Security account from late November, and paper notices go out by mail in December. That notice shows your exact new amount, including the Medicare deduction.
For most people there is nothing to do. The new amount arrives automatically on your January payment date. The only people who should act are those whose payment does not arrive within three mailing days of their date, or whose bank details have changed.
FAQ: Social Security January 2027 payment dates
When is my first Social Security payment with the 3.6% COLA?
It depends on your birthday. Birthdays on the 1st to the 10th are paid Wednesday, January 13, 2027; the 11th to the 20th on Wednesday, January 20; and the 21st to the 31st on Wednesday, January 27. SSI recipients and people paid on the 3rd of the month get it early, on Thursday, December 31, 2026.
Why is my January SSI payment dated December 31, 2026?
SSI is normally paid on the 1st of the month. January 1, 2027 is a federal holiday, so the payment moves to the last business day before it, which is Thursday, December 31, 2026.
How much will my check go up in January 2027?
Benefits rise 3.6%. The average retired worker gets about $75 more a month, from about $2,095 to about $2,170. Your exact amount depends on your earnings record and is shown in your COLA notice.
Is the December 31 payment extra money?
No. It is the January payment, paid early because January 1 is a holiday. SSI recipients get two payments in December 2026 and none dated in January 2027.
Will Medicare take the whole raise?
Probably not, but the final Part B premium is not set yet. The Trustees project $209.50 a month, up from $202.90. If that holds, the average retiree keeps about $68 a month of the raise after the Part B deduction.
Sources: Social Security Administration, 2027 COLA Fact Sheet (October 14, 2026); Social Security Administration, Schedule of Social Security Benefit Payments 2027, Publication No. 05-10031; Social Security Administration, SSI Federal Payment Amounts for 2027.