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Roth Conversion Glossary
Short definitions for Roth conversion calculator inputs, tax concepts, and retirement-account terms.
Roth Conversion
A movement of retirement assets from a pre-tax account into a Roth IRA.
Taxable Conversion
The portion of a Roth conversion that is treated as taxable income.
After-Tax Basis
Money in a traditional IRA that has already been taxed.
Pro-Rata Rule
A rule that can make IRA conversions partly taxable even when basis exists.
Form 8606
An IRS form commonly used to report nondeductible IRA basis and conversions.
Federal Tax Bracket
A marginal rate range used in the federal income tax system.
Marginal Tax Rate
The rate applied to the next dollar of taxable income.
State Marginal Tax Rate
A user-estimated state income tax rate applied to the taxable conversion.
Break-Even Year
The modeled year when Roth after-tax value offsets upfront conversion cost.
Expected Annual Return
A user assumption for compound growth in projections.
Retirement Tax Rate
A user estimate of future marginal tax rate in retirement.
Early Distribution Penalty
A potential penalty related to certain distributions before age 59.5.
Tax Withholding
Money withheld from a distribution to pay estimated taxes.
Backdoor Roth
A strategy concept involving nondeductible IRA contributions and Roth conversion.
Multi-Year Conversion
A conversion approach spread across more than one tax year.
Bracket Capacity
Estimated remaining room before taxable income reaches a higher bracket.
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.