# Form 1120 Cash Basis Reconciliation

> Reconcile multiple source documents (invoices, expense sheets, bank statements) to establish authoritative cash-basis revenue and expenses for Form 1120 C-Corp filing

- Skill: `vamseeachanta/form-1120-cash-basis-reconciliation` (Agent Skill)
- Install (CLI): `npx skillmds@latest add vamseeachanta/form-1120-cash-basis-reconciliation`
- Raw SKILL.md: https://api.skillmd.com/api/skills/vamseeachanta/form-1120-cash-basis-reconciliation/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Finance & Business
- Author: vamseeachanta (https://skillmd.com/u/vamseeachanta)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/vamseeachanta/form-1120-cash-basis-reconciliation

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# Form 1120 Cash-Basis Revenue & Expense Reconciliation

When multiple source documents conflict (invoice dates vs. bank deposits, expense ledgers vs. bank statements), establish a single authoritative source — typically the expense sheet derived from actual bank activity, since cash-method corporations report when cash lands in the account, not when invoiced. Map each line item from the authoritative expense sheet directly to Form 1120 line items, flagging book-tax differences (like imputed interest under §7872). Verify Schedule L beginning-of-year balances against prior returns or reconstruct from entity formation records.