Failing to withdraw a required minimum distribution (RMD) from your own or an inherited IRA by the deadline results in a big tax code penalty: 50%. That's right. If you were supposed to take out a minimum of $4,000 and (oops!) did not do so, you have the privilege of writing the IRS a check for $2,000. It's important to remember that the rules related to RMDs changed on January 1, 2020

Like many investors, you're likely aiming to build a comfortable nest egg to ensure a comfortable retirement. Among retirement financial planners, this is called the "accumulation phase." In this phase, your goal is to invest wisely by choosing stocks with long-term potential for your retirement portfolio, such as Atmos Energy (ATO Quick QuoteATO - Free Report) , a current top ranked dividend stock.

There is also a second phase of retirement planning that gets less focus - despite the fact that it's the more interesting part. It's the "distribution phase," which essentially means spending the wealth you've worked hard to amass.

Making plans for the distribution stage involves deciding where you'll live in retirement, whether you'll travel, your proposed leisure activities, and more decisions that will affect your spending during your golden years.

Along with these aspects, it is important to consider the RMD that applies to most retirement accounts. Essentially, the IRS requires you to withdraw a specific sum from your qualified retirement accounts once you attain a certain age. That age used to be 70 1/2 but it is now 72.

Why does the IRS require these distributions? It's straightforward - they need to ensure they get their tax. In the event that this standard didn't exist, individuals could live off other pay and never pay tax on their retirement investment returns. So, that cash could be left to family or companions as an inheritance without the IRS getting any taxes from you.

Key Facts to Know About RMDs

Which types of retirement accounts have RMDs? Qualified retirement accounts like IRA accounts, 401(k)s, 457 plans and other tax-deferred retirement savings plans like a TSP, 403(b), TSA, SEP, or SIMPLE IRA plan require withdrawals in retirement.

When do I need to begin withdrawals? For most accounts, you should take your first distribution by April 1 of the year following the calendar year in which you turn 72. If you retire after 72, you must withdraw your first RMD from your 401(k), profit-sharing, 403(b), or other defined contribution plan by April 1 of the year following the calendar year that you retire.

For each year after your required starting date, you must take your RMD by December 31. Note that you don't need to take an RMD on a Roth IRA since you covered taxes before contributing. Other varieties of Roth accounts require RMDs. But, there are approaches to avoid them - for instance, you can roll your Roth 401(k) into your Roth IRA.

What will happen if I neglect to take my RMD? If you don't take an RMD, or don't take a large enough distribution, you are liable for a 50% tax on the amount that was not withdrawn in time.

How much money do I have to withdraw? To calculate a specific RMD, you must divide your prior year's December 31st retirement account balance by a "distribution period" factor based on your age.

Here's an example to give you an idea of the math: Ann is 71 and will take her first RMD in the year following the year she turns 72. Her IRA balance toward the end of the preceding year was $100,000. Her "distribution period" factor is 27.4. Dividing $100,000 by 27.4 equals $3,649.63. This is the amount Ann is required to withdraw for her first RMD.

Learning about the "distribution phase" is just one aspect of preparing for your nest egg years.

To learn more about the tax implications of retirement spending - and much more about retirement planning - download our free guide: Retirement Made Easy.