Most people know that the federal income tax filing deadline is the last day to file a return, but fewer realize it is also the last day to make certain prior-year retirement and health savings contributions. If you missed contributing to an HSA or a traditional IRA during the calendar year, you may still have time to act — often well into the following spring. The IRS confirms this window in Publication 969 (for HSAs) and Publication 590-A (for IRAs).
Why a contribution deadline matters
For accounts that allow a prior-year contribution, any amount you deposit between January 1 and the tax filing deadline (generally April 15, or a date extended by the IRS in any given year) can be treated as if it were made in the prior tax year. This means the contribution can count toward the prior year's contribution limit and may generate a deduction or other tax benefit on a return you may not have filed yet.
The IRS sets the annual contribution limits for each account type, and those limits are adjusted periodically for inflation.
Health Savings Accounts (HSAs)
An HSA is a savings account available to individuals enrolled in a qualifying high-deductible health plan (HDHP). Contributions to an HSA are generally tax-deductible, grow without being taxed, and can be withdrawn free of tax when used for qualified medical expenses.
Key points about the prior-year window:
- You must have been enrolled in a qualifying HDHP for the months you are claiming contributions.
- The contribution must be designated as a prior-year contribution when you make it — contact your HSA administrator to ensure it is coded correctly.
- If you contribute for a prior year after January 1, the contribution still counts against that prior year's limit, not the current year's limit.
The IRS determines the annual contribution limits based on whether you have self-only or family HDHP coverage, and publishes the amounts annually in a revenue procedure.
Traditional IRAs
A traditional IRA is an individual retirement account that may allow a deductible contribution depending on your income and whether you (or your spouse) are covered by a workplace retirement plan.
Key points:
- The prior-year contribution window runs to the tax filing deadline — the same deadline as for HSAs.
- Not everyone who contributes to a traditional IRA can deduct the contribution. Deductibility phases out at income levels the IRS adjusts each year, described in Publication 590-A.
- If you cannot deduct a traditional IRA contribution, a Roth IRA (discussed below) or a non-deductible traditional IRA contribution may be worth understanding with the help of a qualified professional.
Roth IRAs
A Roth IRA is funded with after-tax dollars; contributions are not deductible, but qualified withdrawals in retirement are generally not taxed. Like traditional IRAs, Roth IRA contributions for a prior year can be made up to the filing deadline. Eligibility to contribute phases out above income levels the IRS sets and adjusts annually.
SEP-IRAs and SIMPLE IRAs
Self-employed individuals and small business owners often have access to SEP-IRA or SIMPLE IRA accounts, which allow higher contribution limits than traditional or Roth IRAs.
- A SEP-IRA contribution for the prior year can typically be made up to the filing deadline including extensions — a longer window than traditional IRAs.
- SIMPLE IRA contribution rules differ and generally do not allow the same prior-year catch-up window.
What to watch for
- Designate the year correctly. When making a prior-year contribution, tell your financial institution or HSA administrator in writing which year it applies to. Mis-designated contributions can cause excess-contribution penalties.
- Keep records. Retain confirmation of the deposit date and your written designation. You will need this if questions arise.
- Extension deadlines. A filing extension generally extends certain contribution windows (notably for SEP-IRAs) but not others (traditional and Roth IRA deadlines remain at the original April deadline even if you file an extension).
Where to get help
Determining how much you can contribute, which account types suit your situation, and whether contributions are deductible involves your income, filing status, and workplace retirement plan enrollment. A find a tax professional can help you understand the options before the deadline passes.
Sources
- IRS Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans (irs.gov)
- IRS Publication 590-A, Contributions to Individual Retirement Arrangements (irs.gov)
- IRS Publication 560, Retirement Plans for Small Business (irs.gov)