About
Plain numbers, no upsell.
BizTaxMetrics is a one-person editorial studio run by a former Big Four tax practice lead. We build the calculators we wished we'd had when we sat on the other side of the desk — ones that show the actual federal and state-level math instead of selling you a "tax savings kit" for $497.
How we work.
Every calculator on this site is hand-built against the IRS's published rate schedule for the current tax year. The federal self-employment tax is 15.3% (12.4% Social Security + 2.9% Medicare) on 92.35% of net earnings — that's the IRS's standard Schedule SE adjustment, not a guess. State filing fees are pulled from each Secretary of State's published schedule and refreshed quarterly.
We are not a CPA firm and we do not provide tax advice. If you have a complex situation — multi-state operations, reasonable-comp disputes, inventory accounting, or anything involving more than one owner — hire a licensed CPA or EA. We give you the model so the conversation with that professional is shorter and cheaper.
What we don't do.
- · We don't sell tax preparation services.
- · We don't collect your data — there is no account, no form, no CRM.
- · We don't run ads on this site.
- · We don't publish "sponsored" content or paid state rankings.