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Notice code 18 — The tax reported on Line 11 of Part I did not match the amount reported on Line 4 of Schedule G. Lin…
The tax reported on Line 11 of Part I did not match the amount reported on Line 4 of Schedule G. Line 11 of Part I and line 4 of Schedule G must match exactly.
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.
Immediate steps
Resolves at publish from the catalog row.
What the IRS language says
The tax reported on Line 11 of Part I did not match the amount reported on Line 4 of Schedule G. Line 11 of Part I and line 4 of Schedule G must match exactly.
What it usually means
18 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.
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