Tax
Filing an amended Form 5472 or 1120: when and how
Amending prior-year tax returns is possible. Form 1120-X (corporate amended) is the vehicle for Form 5472 corrections.
When to amend
Common amendment triggers: discovered missed reportable transactions, incorrect transaction amounts reported, classification errors (capital contribution vs loan), filing-status changes.
Generally amend within 3 years of original filing deadline.
How to amend
File Form 1120-X (amended corporate return) with corrected Form 5472 attached. Explain the changes in Form 1120-X explanation section.
CPA fee: typically $500-$1,200 for amended return preparation. Costs more than original filing because of the explanation work.
After filing amendment
IRS processing: 6-12 months typically. IRS may request additional documentation or schedule examination. Respond promptly to any IRS notices.
Penalties for original errors may still apply but generally less severe when voluntarily corrected vs IRS-discovered.
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