Definition

Supporting Documents for Contractor Transactions

Supporting documents are the invoices, receipts, sales records, payroll records, and similar papers or files created by business transactions. An electrical contractor needs these documents because purchases, sales, payroll, and other transactions provide the information that must be entered in the books and used to prove income or deductions when required.

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Updated 2026-05-04

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Electrician Business Operations

Running an Electrical Contracting Business Course

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