Weekly: Record and review transactions
Record transactions
Record every transaction (customer billings and payments, vendor payments, and so on) in the proper account at least every week
Document and file receipts
Keep copies of all invoices, cash receipts, and cash payments, and add them to organized files for easy reference.
Review unpaid bills
Create records for each vendor, and keep track of billing dates, amounts due, and payment due dates.
Prepare and send invoices
Be sure to include payment terms in invoices, and consider offering early-payment incentives to get paid on time.