Retirement savings in 401(k) accounts reached trillions of dollars in recent years, and many seniors are now facing Required Minimum Distribution (RMD) rules for the first time. One of the most common questions retirees ask is, “When does RMD start for 401 (k) accounts?” Missing the deadline can lead to expensive IRS penalties and unexpected tax bills. The rules have also changed several times under recent retirement laws, which creates confusion for many people. Understanding your withdrawal timeline now can help you avoid costly mistakes later.
Here is what you need to know about 401 (k) RMD rules and how they may affect your retirement income.
What Is a Required Minimum Distribution (RMD)?
A Required Minimum Distribution, or RMD, is the minimum amount you must withdraw each year from certain retirement accounts once you reach a certain age.
The IRS requires these withdrawals because your retirement savings were funded with pre-tax dollars. Eventually, the government wants those funds taxed.
RMDs usually apply to:
- Traditional 401(k) accounts
- Traditional IRAs
- SEP IRAs
- SIMPLE IRAs
- Other qualified retirement plan accounts
Roth IRAs generally do not require RMDs during the original owner’s lifetime. If you have retirement savings in multiple accounts, each account may have separate withdrawal requirements.
When Does RMD Start for 401 (k) Accounts?
If you are wondering: When does RMD start for 401 (k) plans, the answer depends on your age and retirement status.
Under current IRS rules:
- Most retirees must begin taking RMDs at age 73
- Your first RMD deadline is April 1 of the year after you turn 73
- After that, yearly RMDs must be taken by December 31
For example:
- If you turn 73 in 2026, your first RMD is due by April 1, 2027
- Your second RMD must still be taken by December 31, 2027
That could mean taking two taxable withdrawals in one year. These updated 401k RMD rules came from the SECURE 2.0 Act, which increased the starting age from previous limits.
Do You Have to Take an RMD If You Still Work?
In some cases, you may delay RMDs if you are still employed.
Many employer-sponsored 401(k) plans allow you to postpone RMDs if:
- You still work for the company sponsoring the plan
- You do not own more than 5% of the business
However, this exception may not apply to old 401(k) accounts from previous employers.
It is important to:
- Review your plan documents
- Speak with your plan administrator
- Confirm whether the still-working exception applies to you
Not all plans follow the same rules.
Which Retirement Accounts Require RMDs?
Many seniors assume all retirement accounts follow identical withdrawal rules. That is not always true.
Accounts that usually require RMDs include:
- Traditional 401(k)s
- Traditional IRAs
- SEP IRAs
- SIMPLE IRAs
- 403(b) plans
Accounts that may not require RMDs:
- Roth IRAs
- Some Roth 401(k)s under updated rules
Inherited accounts may also have separate requirements depending on:
- Your relationship to the original owner
- The age of the original account holder
- Current IRS regulations
This is one reason many retirees feel overwhelmed by retirement income planning.
How to Calculate 401 (k) RMD Amounts
Many retirees also ask how to calculate 401 (k) RMD amounts correctly.
The IRS uses:
- Your retirement account balance
- Your age
- IRS life expectancy RMD tables
The basic formula looks like this:
\text{RMD} = \frac{\text{Account Balance}}{\text{Life Expectancy Factor}}
For example:
- If your 401(k) balance is $500,000
- And your IRS factor is 26.5
- Your estimated RMD would be about $18,868
Your account balance is usually based on the value from December 31 of the previous year. Mistakes can happen easily and so many retirees work with financial professionals to confirm calculations.
What Is the Penalty for Not Taking RMD?
The penalty for not taking RMD withdrawals can be expensive.
If you fail to withdraw the required amount:
- The IRS may charge a penalty tax
- You could also owe regular income taxes on the missed amount
Recent law changes reduced some penalties, but they can still be significant.
Common mistakes include:
- Forgetting the deadline
- Calculating the wrong amount
- Missing an old retirement account
- Confusing IRA and 401(k) rules
The good news is that the IRS may reduce penalties if you correct the mistake quickly and file the proper paperwork. Still, avoiding the problem altogether is usually the better option.
What Are the Biggest RMD Mistakes Retirees Make?
Many seniors underestimate how complicated retirement withdrawals can become.
Some of the biggest RMD mistakes include:
1. Missing the First Deadline
Your first RMD has a different deadline from future withdrawals. This confuses many retirees.
2. Taking Two RMDs in One Year
Delaying the first withdrawal until April may increase taxable income because you may need a second RMD later that same year.
3. Forgetting Multiple Accounts
You may have:
- Old 401(k)s
- IRAs
- Employer plans
- Inherited accounts
Missing even one account could trigger penalties.
4. Ignoring Tax Planning
RMDs can affect:
- Social Security taxation
- Medicare premiums
- Overall retirement taxes
This is why withdrawal planning matters.
Why Are So Many Retirees Confused About 401 (k) RMD Rules?
Retirement rules have changed several times over the last few years.
Many seniors struggle to keep up with:
- SECURE Act updates
- Changing RMD ages
- Inherited IRA rules
- Tax law changes
- Different qualified retirement plan requirements
Unfortunately, confusion can lead to:
- Higher taxes
- Missed deadlines
- Reduced retirement income
- Unexpected penalties
Many retirees also receive conflicting information online. That is why reliable retirement education matters. Retirement Income Planner helps seniors better understand retirement income decisions, Social Security timing, and withdrawal strategies by connecting them with licensed professionals who can provide guidance based on their situation.
Can You Reduce Taxes on RMD Withdrawals?
Although RMDs are required, there may be ways to manage taxes more efficiently.
Possible strategies include:
- Roth conversions before RMD age
- Qualified charitable distributions (QCDs)
- Spreading withdrawals carefully
- Coordinating withdrawals with Social Security benefits
Every retirement situation is different. What works for one person may not work for another.
Reviewing your income sources early may help reduce surprises later in retirement.
What Should You Do Before Your First RMD?
Before your first RMD arrives, take time to prepare.
Helpful steps include:
- Review all retirement accounts
- Confirm your RMD age
- Estimate taxable income
- Understand your deadlines
- Check beneficiary information
- Create a retirement income strategy
Planning ahead may help you avoid rushed decisions and unnecessary taxes. Many seniors also find it helpful to discuss retirement income planning, Social Security timing, and survivor considerations with a licensed professional.
Get Help Building a Smarter Retirement Income Strategy
Understanding when RMDs start for 401 (k) accounts is an important part of protecting your retirement income. Missing deadlines or misunderstanding the rules can lead to taxes, penalties, and financial stress. The good news is that proper planning can help you stay organized and avoid common mistakes. Whether you are approaching age 73 or already taking withdrawals, reviewing your retirement strategy now can make a big difference later. Retirement Income Planner is dedicated to helping seniors learn more about Social Security, retirement income, and financial planning by connecting them with trusted licensed professionals for guidance and support. Call us today!
FAQs
When does RMD start for 401 (k) accounts?
Most people must begin taking Required Minimum Distributions from their 401(k) at age 73. Your first withdrawal is generally due by April 1 of the year after you turn 73.
What happens if I forget to take my RMD?
If you miss your RMD deadline, the IRS may charge a penalty on the amount you failed to withdraw. You may also still owe regular income taxes on the missed distribution.
How do I calculate my 401(k) RMD?
Your RMD is calculated using your account balance and an IRS life expectancy factor. Most retirees use the balance from December 31 of the previous year.
Do Roth IRAs have RMDs?
Roth IRAs generally do not require RMDs during the original account owner’s lifetime. However, inherited Roth accounts may follow different rules.
Can I delay my RMD if I still work?
Some employer-sponsored 401(k) plans allow you to delay RMDs if you are still employed. This exception usually does not apply if you own more than 5% of the company.
Are RMD withdrawals taxable?
Yes, most RMDs from traditional retirement accounts are taxed as ordinary income. The amount withdrawn may also affect your Social Security taxes and Medicare premiums.
Can I take more than my required RMD amount?
Yes, you can withdraw more than the required minimum amount. However, extra withdrawals generally do not reduce future RMD requirements.
Do inherited 401(k) accounts require RMDs?
Inherited 401(k) accounts often have separate RMD rules based on your relationship to the original owner. The withdrawal timeline may vary depending on current IRS regulations.
What retirement accounts require RMDs?
RMDs commonly apply to traditional 401(k)s, traditional IRAs, SEP IRAs, and SIMPLE IRAs. Roth IRAs are one of the main exceptions.
How can I avoid mistakes with 401 (k) RMD rules?
Review your retirement accounts regularly and confirm your deadlines each year. Many retirees also work with financial professionals to help manage withdrawals and retirement income planning.