A lump-sum Roth conversion places the full modeled conversion amount into one tax year.
This can make bracket impact, state tax assumptions, and cash-flow cost easier to see in a single-year estimate.
The calculator's multi-year table compares this against equal annual splits for education only.
This educational page explains equal-split schedule modeling and does not recommend a conversion amount or timing.
This Roth Conversion Calculator is for educational and illustrative purposes only. It does NOT constitute tax, financial, legal, or investment advice. The calculation results are based on the information you provide and the latest IRS tax rules, which are subject to change. We do not guarantee the accuracy of the results. Please consult a licensed Certified Public Accountant (CPA), financial advisor, or tax professional before making any financial decisions.