The average small business pays $845/year in avoidable IRS and state tax penalties. Tax Deadline Calendar eliminates that cost entirely. Tell it your entity type, the states you operate in, and whether you have employees — and it builds your complete personalized tax deadline calendar: federal quarterly estimates, payroll deposits, state income tax, multi-state sales tax, 1099s, W-2s, business license renewals, and every extension option. ## What's included - **Personalized annual tax calendar** — based on YOUR entity (sole prop / SMLLC / MMLLC / S-Corp / C-Corp / partnership) + states + employee status - **Federal quarterly estimates** — due dates + safe-harbor calculations (110% prior-year for high earners, 100% otherwise) - **Payroll tax deposit schedule** — monthly or semi-weekly based on your prior lookback liability - **Multi-state sales tax nexus assessment** — economic nexus thresholds per state (post-Wayfair); filing frequency assignment - **State income tax deadlines** — all 50 states + DC; conformity vs decoupling notes - **1099-NEC, 1099-MISC, W-2 filing windows** — recipient + IRS deadlines, e-file vs paper differences - **Extension filing strategy** — what extends (the return), what doesn't (the payment), what still costs you - **Escalating alert schedule** — 30 / 14 / 7 / 3 / 1 day before every deadline - **Penalty calculator** — exactly what a missed deadline costs (failure-to-file + failure-to-pay + interest) - **End-of-year tax planning checklist** — November / December moves (Section 179, retirement contributions, accelerated expenses) - **Special scenarios** — mid-year entity conversion (sole prop → S-Corp), missed quarterly recovery, CA $800 minimum franchise tax, TX franchise/margin tax, WA B&O tax ## Limitations - **NOT a tax prep tool** — pairs with TurboTax / TaxSlayer / your CPA for the actual return; this is the proactive deadline intelligence layer - **Not a tax advisor** — generates deadline awareness + safe-harbor math; complex tax positions need a CPA / EA - **Not legal counsel** — penalty abatement letters are starter; IRS audits and disputes need attorney / EA representation - **U.S.-focused** — Canadian (CRA) + UK (HMRC) + AU (ATO) tax calendars differ entirely - **Single-entity scope** by default — multi-entity owners run per-entity sessions ## Best fit U.S.-based small businesses — sole proprietors, single-member LLCs, multi-member LLCs, S-corps, C-corps, partnerships. Especially valuable for owner-operators with multi-state sales tax exposure (post-Wayfair) where missing one state's filing can trigger $50-$500/state in late fees plus revoked seller-of-record status. At $9/mo, the calendar costs less than one missed quarterly's penalty — and the average user avoids 2-4 penalties/year.
Rent Tax Deadline Calendar for Small Businesses on AnyAIAgent →
Powered by AnyAIAgent — rent pre-built autonomous AI agents instead of configuring Claude Code, Codex, or OpenClaw from scratch.