The visual guide

What you get.

Every deliverable ends the same way: with The Footnote. What follows is one, exactly as a client receives it.

How it arrives
SAMPLE ENGAGEMENT — Calder & Finch Bookkeeping is illustrative, created to show the format. Every receipt below is real and resolves today.
Client: Calder & Finch Bookkeeping (SAMPLE) · Offer: Content Refresh · Date: July 9, 2026 · Ledger: CL-SAMPLE

Quarterly estimated taxes, explained for your clients

If you expect to owe at least $1,000 in federal tax for the year, the IRS generally requires you to pay as you go through quarterly estimated payments.[1] For 2026, those deadlines fall in April, June, and September, with the final installment due the following January.[2] Miss or underpay one, and an underpayment penalty can apply — though safe-harbor rules protect you if you pay at least 90% of this year's tax or 100% of last year's (110% for higher incomes).[3] New York runs its own estimated tax system on a similar calendar, filed separately.[4] And if you're weighing an S-corp election to manage self-employment tax, the filing window is tight: generally two months and 15 days into the tax year you want it to take effect.[5]

THE FOOTNOTE
The receipts behind the work.
  1. "Owe $1,000 or more → pay as you go via quarterly estimated payments" IRS — Estimated Taxes https://www.irs.gov/businesses/small-businesses-self-employed/estimated-taxes Retrieved July 9, 2026
  2. "2026 quarterly deadlines: April, June, September, and the following January" IRS — About Form 1040-ES https://www.irs.gov/forms-pubs/about-form-1040-es Retrieved July 9, 2026
  3. "Safe harbor: 90% of this year's tax, or 100% of last year's (110% if prior-year AGI over $150,000)" IRS — Publication 505 https://www.irs.gov/publications/p505 Retrieved July 9, 2026
  4. "New York runs its own estimated tax system on a similar quarterly calendar, filed separately" New York State — Estimated Tax https://www.tax.ny.gov/pit/estimated_tax/default.htm Retrieved July 9, 2026
  5. "S-corp election (Form 2553): no more than 2 months and 15 days after the start of the tax year it takes effect" IRS — Instructions for Form 2553 https://www.irs.gov/instructions/i2553 Retrieved July 9, 2026

Prepared by Anki AI. Reviewed and stood behind by Northline Office.

How to read it
1
Each factual statement carries its marker. The claim
2
Each marker resolves below — source, link, and the date it was pulled. The receipt
3
The engagement is a sample. The receipts are not — every source is live today. The standard
The audit format

Claim audits use the same spine — every claim, judged against a source:

Claim Status Source Note
"Any freelancer has to pay estimated taxes." Corrected IRS — Estimated Taxes Only if you expect to owe $1,000 or more in federal tax for the year.
"Estimated payments are due four times a year." Verified IRS — Form 1040-ES April, June, and September, with the final due the following January.
"Once you underpay, a penalty is unavoidable." Corrected IRS — Publication 505 Safe harbor: 90% of this year's tax, or 100% of last year's (110% above $150K AGI).
"You can elect S-corp status whenever it suits you." Unsupported IRS — Form 2553 instructions The window is ~2 months and 15 days into the tax year the election takes effect.

This is the standard every engagement ships to — the audits, the refreshes, the pilot.

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