RothProRata
rothprorata.comInteractive Backdoor Roth IRA pro-rata tax calculator and educational scenario modeler.
- Instant aggregate IRA balance and basis ratio calculations
- Clear visualization of taxable vs. tax-free conversion amounts
Precision bonus, equity vesting, and supplemental wage withholding analyzer.
A planned payroll withholding analyzer comparing aggregate vs. flat percentage withholding rules on bonuses, stock vesting, and severance to prevent tax-season underwithholding surprises.
Standard 22% flat bonus withholding is frequently insufficient for higher income brackets, creating painful tax surprises in April. This tool calculates the exact withholding gap.
Statutory flat rate (22% vs. 37% over $1M) comparative analysis
Aggregate method payroll withholding simulation
Dual-state and local supplemental tax estimate calculation
Net take-home pay breakdown after all mandatory withholdings
Employees receiving bonuses, commissions, or RSU vestings.
Interactive Backdoor Roth IRA pro-rata tax calculator and educational scenario modeler.
Medicare Part B and Part D Income-Related Monthly Adjustment Amount tier projection tool.
Alternative Minimum Tax threshold analysis and incentive stock option exercise planner.