Index card · Taxes
Self-employment and estate tax calculators
Self-employment tax at 15.3% (12.4% Social Security + 2.9% Medicare) on 92.35% of net profit2026 · IRS, and federal estate tax against a $15,000,000 ($30,000,000 for a married couple using portability)2026 · IRS exclusion.
Two very different clients, one shared worry: a large tax bill they didn't plan for. Freelancers and sole proprietors want to know what to set aside; families with significant assets want to know whether estate tax applies at all.
When these questions come up
Self-Employment Tax
Before each estimated payment date, starting in April. “how much should I set aside for taxes as a 1099 contractor”
Estate Tax Planning
The fourth quarter, during annual gifting reviews. “will my kids have to pay estate tax”
Self-employment & estate: questions firms ask
Does the self-employment tax calculator include income tax?
No, only self-employment tax (Social Security and Medicare). It shows the deductible half, which reduces income tax elsewhere on the return.
When is no self-employment tax due?
When net self-employment earnings are below $400 of net SE earnings2026 · IRS.
Does the estate calculator include state estate taxes?
No. It models the federal estate tax only, at 40%2026 · IRS above the exclusion. Several states have lower thresholds, which is worth a line in your follow-up.
Does it handle portability?
No. The calculator applies the exemption you enter for one estate and does not model portability, lifetime gifts or the marital deduction. A married couple using portability can shield up to $15,000,000 ($30,000,000 for a married couple using portability)2026 · IRS, which is exactly the planning conversation the estimate should prompt.
Why pair self-employment and estate tools?
They sit together in the platform's grouping. On your site you can feature them separately; the SE calculator suits EAs and preparers, the estate calculator suits CPA firms and planners.
Does the SE calculator show quarterly estimated payments?
It shows the annual SE tax; dividing by four gives a rough quarterly set-aside. Proper estimates should include income tax too.
Is the estate calculator legal advice?
No. Estate planning involves attorneys; the calculator only estimates federal tax exposure.
Which plan includes them?
Every plan, including free Practitioner (up to 5 calculators at once).
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