Multi-Generational Roth Conversion Planning

With the new 10-Year Rule in place for non-spouse beneficiaries of retirement accounts, one of the new tax strategies for passing tax-free wealth to the next generation is something called the “Next Gen Roth Conversion Strategy”.  This tax strategy works extremely well when the beneficiaries of the retirement account are expected to be in the same or higher tax bracket than the current owner of the retirement account.  

Here's how the strategy works. The current owner of the retirement account begins to initiate large Roth conversions over the course of a number of years to purposefully have those pre-tax retirement dollars taxed in a low to medium tax bracket. This way, when it comes time to pass assets to their beneficiaries, the beneficiaries inherit Roth IRA assets instead of pre-tax Traditional IRA and 401(k) assets that could be taxed at a much higher rate due to the requirement to fully liquidate and pay tax on those assets within a 10-year period.  

In addition to lowering the total income tax paid on those pre-tax retirement assets, this strategy can also create multi-generational tax-free wealth, reduce the size of an estate to save on estate taxes, and reduce future RMDs for the current account owner.

10-Year Rule for Non-Spouse Beneficiaries

This tax strategy surfaced when the new 10-Year Rule went into place with the passing of the Secure Act.  Non-spouse beneficiaries who inherit pre-tax retirement accounts are now required to fully deplete and pay tax on those account balances within a 10-year period following the passing of the original account owner.  In many cases when children inherit pre-tax retirement accounts from their parents, they are still working, which means that they already have income on the table. 

For example, if Josh, a non-spouse beneficiary, inherits a $600,000 Traditional IRA from his father when he is age 50, he would be required to pay tax on the full $600,000 within 10 years of his father passing. But what if Josh is married and he and his wife still work and are making $360,000 per year?  If Josh and his wife do not plan to retire within the next 10 years, the $600,000 that is required to be distributed from that inherited IRA while they are still working could be subject to very high tax rates since the taxable distribution stacks on top of the $360,000 that they are already making.  A large portion of those IRA distributions could be subject to the 32% federal tax bracket.

If Josh’s father had started making $100,000 Roth conversions each year while both he and Josh’s mother were still alive, they could have taken advantage of the 22% Federal Tax Bracket I in 2025 (which ranges from $96,951 to $206,000 in taxable income). If they had very little other income in retirement, they could have processed large Roth conversions, paid just 22% in federal taxes on the converted amount, and eventually passed a Roth IRA on to Josh. Utilizing this strategy, the full $600,000 pre-tax IRA would have been subject to the parent’s federal tax rate of 22% as opposed to Josh’s tax rate of 32%, saving approximately $60,000 in taxes paid to the IRS.

Tax Free Accumulations For 10 More Years

But it gets better.  By Josh’s parents processing Roth conversions while they were still alive, not only is there multigenerational tax savings, but when John inherits a Roth IRA instead of a Traditional IRA from his parents, all of the accumulation within that Roth IRA since the parents completed the conversion, PLUS 10 years after Josh inherits the Roth IRA, are completely tax-free. 

Multi-generational Tax-Free Wealth

If you are a non-spouse beneficiary, whether you inherited a pre-tax retirement account or a Roth IRA, you are subject to the 10-year distribution rule (unless you qualify for one of the exceptions). With a pre-tax IRA or 401(k), not only is the beneficiary required to deplete and pay tax on the account within 10 years, but they may also be required to process RMDs (required minimum distributions) from their inherited IRA each year, depending on the age of the decedent when they passed away.

With an Inherited Roth IRA, the account must be depleted in 10 years, but there is no annual RMD requirement, because RMDs do not apply to Roth IRAs subject to the 10-year rule.  So, essentially, someone could inherit a $500,000 Roth IRA, take no money out for 9 years, and then at the end of the 10th year, distribute the full balance TAX-FREE.  If the owner of the inherited Roth IRA invests the account wisely and obtains an 8% annualized rate of return, at the end of year 10 the account would be worth $1,079,462, which would be withdrawn completely tax-free.

Reduce The Size of an Estate

For individuals who are expected to have an estate large enough to trigger estate tax at the federal and/or state level, this “Next Gen Roth Conversion” strategy can also help to reduce the size of the estate subject to estate tax.  When a Roth conversion is processed, it’s a taxable event, and any tax paid by the account owner essentially shrinks the size of the estate subject to taxation. 

If someone has a $15 million estate, and included in that estate is a $5 million balance in a Traditional IRA and that person does nothing, it creates two problems.  First, the balance in the Traditional IRA will continue to grow, increasing the estate tax liability that will be due when the individual passes assets to the next generation.  Second, if there are only two beneficiaries of the estate, each beneficiary will have to move $2.5 million into their own inherited IRA and fully deplete and pay tax on that $2.5M PLUS earnings within a 10-year period.  Not great.

If, instead, that individual begins processing Roth conversions of $500,000 per year, and over a course of 10 years can fully convert the Traditional IRA to a Roth IRA (ignoring earnings), two good things can happen. First, if that individual pays an effective tax rate of 30% on the conversions, it will decrease the size of the estate by $1.5 million ($5M x 30%), potentially lowering the estate tax liability when assets are passed to the beneficiaries of the estate. Second, even though the beneficiaries of the estate would inherit a $3.5M Roth IRA instead of a $5M Traditional IRA, no RMDs would be required each year, the beneficiaries could invest the Inherited Roth IRA which could potentially double the value of the Inherited Roth IRA during that 10-year period, and withdraw the full balance at the end of year 10, completely tax free, resulting in big multi-generational tax free wealth.

The Power of Tax-Free Compounding

Not only does the beneficiary of the Roth IRA benefit from tax-free growth for the 10 years following the account owner's death, but they also receive the benefit of tax-free growth and withdrawal within the Roth IRA, as long as the account owner is still alive.  For example, if someone begins these Roth conversions at age 70 and they live until age 90, that’s 20 years of compounding, PLUS another 10 years after they pass away, so 30 years in total.

A quick example showing the power of this tax-free compounding effect: someone processes a $200,000 Roth conversion at age 70, lives until age 90, and achieves an 8% per year rate of return. When they pass away at age 90, the balance in their Roth IRA would be $932,191.  The non-spouse beneficiary then inherits the Roth IRA and invests the account, also achieving an 8% annual rate of return. In year 10, the Inherited Roth IRA would have a balance of $2,012,531. So, the original owner of the Traditional IRA paid tax on $200,000 when the Roth conversion took place, but it created a potential $2M tax-free asset for the beneficiaries of that Roth IRA.  

Reduce Future RMDs of Roth IRA Account Owner

Outside of creating the multi-generational tax-free wealth, by processing Roth conversions in retirement, it’s shifting money from pre-tax retirement accounts subject to annual RMDs into a Roth IRA that does not require RMDs.  First, this lowers the amount of future taxable RMDs to the Roth IRA account owner because assets are being shifted from their Traditional IRA to Roth IRA, and second, since RMDs are not required from Roth IRAs, the assets in that IRA are allowed to continue to compound investment returns without disruption. 

About Michael……...

Hi, I’m Michael Ruger. I’m the managing partner of Greenbush Financial Group and the creator of the nationally recognized Money Smart Board blog . I created the blog because there are a lot of events in life that require important financial decisions. The goal is to help our readers avoid big financial missteps, discover financial solutions that they were not aware of, and to optimize their financial future.