Roth Conversion Calculator
Build a transparent roth conversion scenario from values you control.
Verify this calculatorMaintained
See what the result uses—and what it cannot know.
Sumvoro calculates deterministically from the visible inputs. It does not invent lender terms, local rules, market values, medical facts, or professional judgments.
- 1 · InputsCheck every entered value against the latest statement, quote, measurement, or official source.
- 2 · Formula
Conversion tax uses today’s rate; future balances compound and traditional withdrawals use the future rate. - 3 · SensitivityUse Insights to run a lower and higher case. If the conclusion changes easily, collect better information or leave more margin.
- 4 · ScopeThis tool is maintained and covered by automated calculation tests. Provider timing, rounding, and omitted facts can still change a real-world result.
- Formula release
- 2026.10-r4
- Release date
- October 10, 2026
- Review status
- Maintained
- Source review
- September 12, 2026
Optional readingLearn how this calculator works
How the roth conversion calculator works
Estimate conversion tax and a simplified future after-tax comparison.
Conversion tax uses today’s rate; future balances compound and traditional withdrawals use the future rate.
Read our calculation methodology and limitations.
Example
Start with the example, then replace each field with figures from your quote, statement, budget, or plan.
What affects the result
- Use documented current figures when available.
- Test multiple scenarios before deciding.
- Verify legal, tax, and contract details with the appropriate source.
Helpful guides
Frequently asked questions
What should I enter?
Use the field guidance and current documents wherever possible.
Can I rely on this result?
Use it as a deterministic planning estimate, then confirm important decisions with official sources and qualified professionals.