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Tax Strategy

Roth Conversion Calculator

Estimate the long-term tradeoff of paying tax now for future tax-free withdrawals.

Best used for

Models your current plan in plain English.

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Tax & Withdrawals

Roth Conversion Calculator

Estimate the long-term tradeoff of paying tax now for future tax-free withdrawals.

Snapshot
A Roth conversion may add about $27,626 of long-term value.
Converting $50,000 now creates an immediate tax cost of $11,000.
Roth future value
$137,952
Pretax after tax
$99,325
Your Numbers
Pretax dollars moved into Roth.
$
Current tax rate
Marginal tax rate today.
22
Retirement tax rate
Expected effective rate later.
28
Annual return
Nominal annual portfolio growth assumption.
7
Years
Projection length.
15
Results
A Roth conversion may add about $27,626 of long-term value.
Converting $50,000 now creates an immediate tax cost of $11,000.
Roth future value
$137,952
Pretax after tax
$99,325
Current tax cost
$11,000
Net advantage
$27,626

Projection outlook

See how the modeled path evolves over time under the current assumptions.

Projected balance
Total contributions

Optimistic currently leads conservative by about $21,890.

Important findings
What the current inputs suggest
Converting $50,000 now creates an immediate tax cost of $11,000.
What changes the result most
Optimistic currently leads conservative by about $21,890, so the outcome is meaningfully sensitive to your assumptions.
How to use this result
Use the headline to frame the decision, then check the supporting metrics and timeline before acting. The output is strongest as a planning tool, not as a guarantee.

How it works

The calculation, without the clutter

1

WealthyNest uses reusable finance formulas for compounding, withdrawal targets, and cash-flow projections.

2

Each tool pairs those formulas with calculator-specific assumptions and a concise summary.

Where this tool is most useful

Roth conversions often become most attractive during temporarily low-income years before required distributions begin.

Key assumptions

What to sanity-check

  • Returns are smoothed estimates and do not reflect real-world market volatility.
  • All figures are in today's dollars unless the calculator is explicitly modeling inflation adjustments.
  • This tool is intended for planning, education, and comparison rather than certainty.

Companion guide

How Roth conversions work

Learn when Roth conversions may make sense and what tradeoffs to model.

Read the guide

FAQ

Common questions

Are these outputs guarantees?

No. They are planning estimates based on your assumptions and should be updated as markets, taxes, and spending change.

Do these calculators replace professional advice?

No. They are a strong planning starting point, but tax, legal, and investment decisions should be reviewed with a qualified professional when appropriate.

How often should I revisit my inputs?

A good rule is to revisit assumptions after major income, spending, family, tax, or market changes and at least a few times per year.

Why do the optimistic and conservative scenarios matter?

They help you see how sensitive the result is to assumptions instead of anchoring on one exact output.

Roth Conversion Calculator | WealthyNest