QuickBooks automatically sets your invoice number and increases it sequentially with each new invoice, but you can adjust this number to anything you want. Setting your own invoice number can help to keep invoices for different clients separate. QuickBooks will continue to advance your invoices by one number, so you'll need to adjust this number for each invoice if you want to jump by other amounts.
To set the invoice number, first change the company setting. Click the gear icon in QuickBooks and then click on "Sales Form Entry." In the Custom Numbers section, check the box next to "Custom transaction numbers" and then click "Save." You can now edit all number fields on your sales forms, including the invoice number. After you edit a number in an invoice and either save it or send it, QuickBooks will remember the new invoice number and continue the sequence.
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