Financial Independence Number Calculator
How much do you need to never work again? Get your FI number at three expense tiers, years to reach each one, Coast FI number, and the monthly savings needed to retire by your target age.
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Estimate your Social Security benefit at different claiming ages — 62, 67, or 70.
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HBTax: eBay Seller Fees Calculator
Calculate your exact eBay Final Value Fees by category, Top Rated Seller discount (10%), promoted listings cost, and true net profit. See the full fee stack before you list.
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HBTax: Reseller Inventory Tracker
Track what you paid for inventory, what you sold it for, and on which platform. Per-item COGS, platform fees, profit, margin, and days-to-sell. Export as CSV for your tax spreadsheet or CPA. Built so tax season takes 30 minutes, not 7 hours.
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