RMD Start Date: When Do Your Required Minimum Distributions Begin?
Use this guide to understand the assumptions, inputs, results, and next steps behind the calculator.
Navigating the rules for Required Minimum Distributions (RMDs) has become increasingly complex over the last few years. Recent legislation has shifted the starting line multiple times, pushing the age you must begin withdrawing from your pre-tax retirement accounts from 70½ to 72, then to 73, and eventually to 75. This calculator determines your exact RMD start date based on your birth year, account type, and current employment status.
Whether you are mapping out your retirement withdrawal strategy or simply trying to avoid steep IRS penalties, knowing your exact deadline is the first step. By pinpointing when your distributions must begin, you can proactively plan how to calculate your RMD step-by-step and build a tax-efficient income plan for your later years.
2026 RMD Age Thresholds by Birth Year
The SECURE Act of 2019 (SECURE 1.0) and the SECURE 2.0 Act of 2022 completely overhauled the RMD timeline. Your mandatory start age is now dictated entirely by the year you were born.
Here is how the IRS determines your RMD age in 2026 and beyond:
| Birth Year | RMD Age | First RMD Year | Notes |
|---|---|---|---|
| June 30, 1949 or earlier | 70 ½ | Past | You are already subject to annual RMDs. |
| July 1, 1949 – 1950 | 72 | Past | You are already subject to annual RMDs. |
| 1951 – 1959 | 73 | 2024 – 2032 | This is the current active threshold for new retirees. |
| 1960 or later | 75 | 2035 or later | The age 75 threshold phases in starting in 2033. |
If you were born between 1951 and 1959, your RMD age is 73. For example, if you were born in 1953, you turn 73 in 2026. Therefore, 2026 is your first RMD year.
If you were born in 1960 or later, you benefit from the maximum delay under current tax law. You will not have to take your first RMD until the year you turn 75. This extended timeline gives younger savers more years of tax-deferred compounding and a wider window to execute tax-efficient withdrawal strategies, such as Roth conversions.
The "Still Working" Exception for Employer Plans
While the age thresholds apply universally to traditional IRAs, the rules change if you are still participating in a workplace retirement plan. If you are actively employed, you may be eligible to delay your RMDs from your current employer's plan even after you reach your statutory RMD age.
This is known as the "still working" exception. To qualify, you must meet two specific criteria:
- You must still be employed by the company that sponsors the retirement plan (e.g., your 401(k), 403(b), or 457(b)).
- You cannot own 5% or more of the business sponsoring the plan.
If you meet these requirements, you can delay your first RMD from that specific employer's plan until April 1st of the year following the year you retire.
Limitations of the Still Working Exception
It is critical to understand the boundaries of this rule. The exception only applies to the plan sponsored by your current employer. It does not apply to:
- Traditional IRAs, SEP IRAs, or SIMPLE IRAs.
- Old 401(k)s or 403(b)s left at previous employers.
- Any accounts owned by a spouse (unless they are also still working and qualify under their own plan).
For example, if you are 74 years old, still working, and own a traditional IRA alongside your current employer's 401(k), you must take an RMD from the traditional IRA. However, you can leave your current 401(k) untouched until you officially retire.
The First-Year Grace Period vs. Subsequent Deadlines
The IRS provides a one-time grace period for your very first RMD. While standard RMDs are always due by December 31st of the calendar year, your first RMD can be delayed until April 1st of the following year.
The "Double RMD" Tax Trap
While the April 1st grace period sounds appealing, using it can create an unexpected tax burden. If you choose to delay your first RMD into the following calendar year, you will be required to take two RMDs in that second year:
- Your delayed first RMD (due by April 1st).
- Your second RMD for the current year (due by December 31st).
Taking two distributions in a single tax year can artificially inflate your Adjusted Gross Income (AGI). This spike in income can push you into a higher federal tax bracket, increase your capital gains tax rate, and trigger Medicare Part B and Part D IRMAA surcharges. For most retirees exploring RMD strategies to minimize the tax hit, taking the first distribution by December 31st of the initial year is the more tax-efficient choice.
Account Types Subject to RMDs
Not all retirement accounts are treated equally under RMD rules. Depending on how your money is invested, you may have different starting dates—or no RMDs at all.
| Account Type | Are RMDs Required? | Notes |
|---|---|---|
| Traditional IRA | Yes | Must begin at age 73 (or 75). |
| SEP & SIMPLE IRA | Yes | Treated identically to Traditional IRAs. |
| 401(k), 403(b), 457(b) | Yes | Eligible for the "still working" exception. |
| Roth IRA | No | The original owner is never required to take distributions. |
| Roth 401(k) / Roth 403(b) | No | SECURE 2.0 eliminated RMDs for Roth employer plans starting in 2024. |
If you hold inherited accounts, the rules are entirely different. Beneficiaries do not wait until age 73 to begin withdrawals. Depending on your relationship to the deceased and the year they passed away, you may be subject to the 10-year rule or required to take annual distributions immediately. To calculate timelines for inherited assets, use the inherited IRA RMD calculator or the inherited Roth IRA RMD calculator.
How Your RMD Dates Are Calculated
The calculator determines your specific deadlines using the age thresholds and employment exceptions outlined in current tax law. Here is the math behind the projection:
1. Determining Your First RMD Year
If you are relying on standard age-based rules (e.g., you are retired or looking at an IRA), the formula is straightforward:
First RMD Year = Birth Year + RMD Age
Where:
- Birth Year = The year you were born.
- RMD Age = 73 (if born 1951-1959) or 75 (if born 1960 or later).
2. Applying the "Still Working" Exception
If you are actively employed, not a 5% owner, and looking at your current employer's plan, the calculator overrides the standard age rule:
Delayed First RMD Year = Retirement Year + 1
Where:
- Retirement Year = The future year you plan to separate from service.
- 1 = The one-year shift allowing you to delay until April 1st of the year after retirement.
3. Calculating the Grace Period Deadline
Regardless of whether your RMD triggers based on age or retirement, your absolute final deadline for the first distribution includes the April 1st grace period:
Latest First RMD Date = April 1, (First RMD Year + 1)
Where:
- First RMD Year = The year you turn your RMD age (or the year you retire, if delayed).
- + 1 = Pushing the deadline to the spring of the following calendar year.
All subsequent RMDs bypass this formula and default to a hard December 31st deadline.
Penalties for Missing Your Start Date
The IRS enforces RMD deadlines strictly. Historically, failing to take an RMD on time resulted in a draconian 50% excise tax on the amount you failed to withdraw.
Under SECURE 2.0, the penalty has been reduced, but it remains one of the steepest in the tax code:
- Standard Penalty: 25% of the shortfall (the amount you should have withdrawn but didn't).
- Reduced Penalty: 10% if you correct the mistake by taking the missed RMD and filing a corrected tax return within a specific correction window (typically two years).
For example, if your required distribution was $20,000 and you only withdrew $5,000, your shortfall is $15,000. The standard penalty would be $3,750 (25% of $15,000).
If you realize you missed your start date, you should take the distribution immediately and consult a tax professional. You can request a penalty waiver by filing IRS Form 5329 and attaching a letter explaining that the shortfall was due to reasonable error and that you are taking steps to remedy it.
Frequently Asked Questions
Quick answers to the questions people usually have after running the retirement calculator.
1What is the RMD age for 2026?
In 2026, the RMD age is 73. This applies to anyone born between 1951 and 1959. The age will not increase to 75 until 2033, which will apply to those born in 1960 or later.
2Do I have to take an RMD from my Roth 401(k)?
No. Starting in 2024, SECURE 2.0 eliminated RMDs for Roth accounts held within employer plans (like a Roth 401(k) or Roth 403(b)). Previously, you had to roll these funds into a Roth IRA to avoid RMDs, but that is no longer necessary.
3Can I aggregate my RMDs across different accounts?
It depends on the account type. If you have multiple Traditional IRAs, you calculate the RMD for each, add them together, and can take the total amount from just one IRA (or any combination). However, 401(k)s and 403(b)s cannot be aggregated with IRAs. You must take separate RMDs from each employer plan you hold. Use the central RMD calculator to project amounts across multiple accounts.
4What is the 5% owner rule?
If you own 5% or more of the company that sponsors your retirement plan, you are disqualified from using the "still working" exception. You must begin taking RMDs from that company's plan at age 73 (or 75), even if you continue working there full-time.
5Does my spouse's age affect my RMD start date?
Generally, no. Your RMD start date is based entirely on your own birth year. However, if your spouse is the sole primary beneficiary of your account and is more than 10 years younger than you, you are allowed to use the Joint Life Expectancy Table to calculate your withdrawal amount, which will result in a smaller required distribution.
6Can I satisfy my RMD with a Qualified Charitable Distribution (QCD)?
Yes. Once you reach age 70½, you can transfer up to $105,000 per year (in 2026) directly from your IRA to a qualified charity. This QCD counts toward satisfying your RMD for the year and keeps the withdrawn amount entirely out of your adjusted gross income.
7How does early retirement affect my RMDs?
Retiring early does not accelerate your RMDs. If you leave the workforce at 60, your funds can continue to grow tax-deferred until you reach your statutory RMD age (73 or 75). If you need income before then, use a monthly retirement income calculator to plan voluntary withdrawals, but mandatory distributions will not apply yet.
Next Steps
Now that you know exactly when your distributions must begin, the next step is determining how much you will be forced to withdraw and how those withdrawals fit into your broader financial plan.
To see how your RMDs will impact your portfolio balances over time, use the how long will my money last calculator. If you are trying to coordinate your upcoming RMDs with other income streams, check out the retirement number calculator to ensure your overall savings target aligns with your post-tax spending needs.