The Short AnswerMoney in pre-tax 401(k)s, IRAs, pensions and cash balance plans is taxed as ordinary income when it is withdrawn. Retirement tax planning manages when and how that happens, using withdrawal sequencing, Roth conversions, and tax-free buckets such as Roth accounts and properly designed life insurance, so the second bill is as small as possible.
Why Do Pre-Tax Retirement Accounts Carry A Second Tax Bill?
Every pre-tax dollar you contributed was a deferral, not a deduction forever. When it comes out it is added to your taxable income for the year. Large balances can push withdrawals into high brackets, and required minimum distributions start at age 73 (75 for people born in 1960 or later), whether you need the money or not.
What Does A Large Pre-Tax Balance Cost In Retirement?
- Required minimum distributions that force taxable income every year
- Medicare IRMAA surcharges on premiums when income crosses set thresholds
- Up to 85% of Social Security becoming taxable
- Heirs inheriting the tax, generally required to empty inherited IRAs within 10 years
How Can You Lower Taxes In Retirement?
Sequencing withdrawals across taxable, pre-tax and tax-free accounts. Partial Roth conversions in lower-income years. Adding tax-free income sources before retirement so the pre-tax pile does not have to carry everything. Your Tax Scorecard shows what your own pile costs to live on.
Common Questions
At what age do required minimum distributions start?
Under SECURE 2.0, RMDs start at age 73 for people born from 1951 through 1959, and at 75 for people born in 1960 or later.
Is a Roth conversion worth it for high earners?
It can be, mainly in years when your income is lower than usual, such as between retirement and RMDs or after a business sale year. You pay tax now at a known rate to avoid tax later. The math depends on your current bracket versus your expected bracket in retirement.
How much of my 401(k) will I lose to taxes?
It depends on your balance, other income, state and how fast you withdraw. For large balances, federal tax alone can take from under 10% to over 30% of the pile depending on the exit. The Second Bill calculator shows the range for your number.
