Pay Taxes Now or Later? The Roth Conversion Math

Most retirement tax guidance overlooks how the Time Value of Money (TVM) impacts Roth IRA conversions. In Part 1 of this series, we break down Decision 1: evaluating the pre-tax Traditional IRA conversion decision purely as a tax rate play. We model whether paying taxes now out of existing assets delivers a mathematical advantage over deferring taxes until required minimum distributions begin. Using our detailed spreadsheet model, we track 20-year portfolio projections to compare ending after-tax balances and calculate the net present value (NPV) of taxes paid. You'll see why treating a Roth conversion as two independent decisions clears up common misconceptions, cuts through conflicting financial advice, and protects long-term retirement wealth. Whether you're planning your retirement distributions or modeling multi-year conversion brackets, understanding the TVM math behind Decision 1 is essential before making any transfer. Follow along cell-by-cell to see the formula breakdowns, marginal rate interactions, and actual after-tax outcomes. --- Join Now: https://numbercrunchnerds.systeme.io/... You will receive lifetime access to Justin's Personal Tax Planning Template & Video Training Program for a one-time access fee. --- Download Justin's 2026 Roth Conversion Planning Flowchart Here: https://numbercrunchnerds.systeme.io/... --- Timestamps: 00:00 - Introduction to Roth IRA Conversions & TVM 01:15 - Overview of the Two Independent Conversion Decisions 04:05 - Decision 1: The Traditional IRA Tax Rate Play 08:30 - Spreadsheet Setup: Beg Balances, Returns & RMDs 14:10 - Calculating the Net Present Value (NPV) of Taxes Paid 18:45 - Ending After-Tax Account Value Comparison 22:15 - Key Takeaways: When Decision 1 Pays Off --- Key Takeaways: Two distinct decisions: A Roth conversion isn't one lumped transaction; Decision 1 evaluates the pre-tax IRA play, while Decision 2 evaluates after-tax assets. Pure tax rate play: Decision 1 hinges strictly on your tax bracket today versus your expected distribution bracket later. TVM & NPV clarify outcomes: Measuring the net present value of tax paid removes guesswork from the "pay now vs. pay later" debate. --- Hashtags: #RothIRA #RothConversion #RetirementPlanning #Taxes #TaxPlanning #PersonalFinance #FinancialPlanning #TraditionalIRA #timevalueofmoney --- www.numbercrunchnerds.com