| What it does | Project retirement savings in a Roth IRA versus a simplified taxable account
| Free marketplace fee calculators for Etsy, eBay and Amazon FBA
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| Stage | Not given
| Startup
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| Founded | Not given
| 2025
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| Based in | Not given
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| Pricing model | Free
| Free
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| Pricing | Not given
| Not given
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| Key features | - Year-by-year balance projections with growth and tax tracking
- Contribution timing selector for beginning or end of year
- Detailed comparison table showing Roth advantage over taxable account
- Balance accumulation graph by age
| - Etsy fee calculator with itemized fees and net payout
- eBay seller profit calculator with Final Value Fee calculation
- Amazon FBA profit calculator including fuel and logistics surcharge
- Poshmark fee calculator with $2.95 vs 20% comparison
- Mercari fee calculator with 10% flat fee calculation
- Depop fee calculator showing 0% seller fees
- Vinted fee calculator with buyer protection fee analysis
- Transparent formulas and variable explanations
- Rates verified from official seller fee schedules
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| What makes it different | - Compares tax-deferred growth in Roth versus tax-drag in taxable accounts under identical contributions
- Transparent calculation methodology with disclosed assumptions and limitations
- Separates contribution principal from modeled growth in results
| - Every fee itemized with true net payout and margin shown
- All calculations run client-side in browser with instant and private results
- Rates verified against official platform fee schedules
- No sign-up, no data collection, no paywalls
- Industry-standard formulas with transparent calculations
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 53 ▼ −1 (down) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 10 | 0 |
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| Citation Flow (Majestic) | 29 | 0 |
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| Referring domains (Majestic) | 80 | 0 |
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Roth IRA Calculator
Metriova