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CP55 — Campus notice only: Issued to inform the Campus that a transaction for a Form 5344 adjustment posts (DC47) with a DLN in…
Campus notice only: Issued to inform the Campus that a transaction for a Form 5344 adjustment posts (DC47) with a DLN in a 790-799 or 900-999 blocking series to cause association of the original return with an adjustment made utilizing a taxpayer’s retained copy of a return. Also generated on Forms 1040X in blocking series 900-909 (TC294/295), 960-969 (TC290), 980-989 (TC290) and MFT55 block 530-…
What this notice is saying
Use the free strategy session if the letter is unclear, high dollar, or collection language appears.
Read the deadline
Response or collection dates on the letter matter more than internet scare stories.
Match the facts
Compare the notice to your return, books, and third-party forms before you reply.
Pick a path
Pay, installment, relief, CNC, or hearing rights — fit-checked to your cash and liability.
Keep books honest
Resolution fails when the ledger cannot defend the story. We align numbers with the plan.
What to do next
Practical steps before fear takes the wheel. Bound from irs_notice.what_to_do.
CP55
Read the notice carefully and note any deadline. Gather returns, notices, and payment records. Book a free strategy session before responding if the amount is large, unclear, or collection language appears.
What the IRS language says
Campus notice only: Issued to inform the Campus that a transaction for a Form 5344 adjustment posts (DC47) with a DLN in a 790-799 or 900-999 blocking series to cause association of the original return with an adjustment made utilizing a taxpayer’s retained copy of a return. Also generated on Forms 1040X in blocking series 900-909 (TC294/295), 960-969 (TC290), 980-989 (TC290) and MFT55 block 530-539 (TC290). Does not generate on civil penalty modules for blocking series 530-539, 960-969 and 980-989 if prior control DLN is 59X. For additional blocking series information refer to Chapter 4.
What it usually means
CP55 is in our IR Manual catalog. Official wording is dense — we translate it for business owners and individuals and map realistic next steps.
Related
Related paths
Most IRS letters sit next to books, tax, or cash-flow stress.