Every bookkeeper needs the same core documents. Bank statements and credit card statements come first because reconciliation is the foundation of accurate bookkeeping. Without monthly statements, there’s no way to verify that your records match what actually happened.

Sales records come next. This includes invoices you’ve sent, payment receipts, and deposit slips. Your bookkeeper needs to know what you billed, when you billed it, and when payment arrived. If you use invoicing software, exporting data or providing login access usually works fine.

Expense receipts matter for categorization and tax documentation. The credit card statement shows you spent $347 at Home Depot, but only the receipt shows whether that was tools, job materials, or office supplies. Good categorization requires knowing what each purchase actually was.

For businesses with employees, payroll records are essential. This includes pay stubs, payroll tax filings, and benefits documentation. If you use a payroll service, providing access to reports or downloading summaries each pay period keeps everything current.

Loan documents and vehicle purchase agreements need to be recorded correctly from the start. Principal payments, interest expense, and asset depreciation all depend on having the original paperwork. Hand these over when you close on financing rather than trying to reconstruct details later.

If you’re a contractor or run a service business, your bookkeeper also needs job-related documents. Contracts show the agreed price and scope. Change orders track approved additions. Subcontractor invoices need to be coded to the right job for accurate job costing. W-9s from subs ensure you can issue 1099s at year end.

Prior year tax returns and financial statements help new bookkeepers understand your business structure and ensure continuity. Opening balances, depreciation schedules, and carryforward items all depend on what happened before.

The simplest approach is setting up a shared folder or using your bookkeeper’s preferred system for document collection. Upload statements when they arrive, snap photos of receipts, and forward invoices as they come in. A few minutes each week prevents the scramble of gathering everything at month end.

Working with bookkeeping services in MetroWest, you’ll get clear guidance on exactly what to provide and how often. The goal is making record-keeping routine rather than a burden, so your books stay current and your financials actually reflect what’s happening in your business.