Free to use, no signup. Built from the same IRS-sourced routing tables we use to send our customers' faxes.
There is no single IRS fax number. Pick your form and state to get the exact one the IRS publishes — with a link to the source.
Printable cover sheet with the correct IRS fax number filled in. No branding on the sheet — it's your document, not an advert.
CP14, CP504, CP2000, LT11, Letter 12C — what your notice code means, your deadline, and whether it can be answered by fax at all.
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