How do I add bank details to invoices so I can get paid, without having to add them manually every time in 'message to customer '

I'd be glad to help you add your banking details in your invoices, bgconservation.

You can customise your invoice template so your bank account details are automatically saved when creating and sending sales transactions. Here's how:

1. Go to the Gear icon and select Custom Form Styles.
2. Click New Style and select Invoice.
3. Proceed to the Content tab.
4. Click the Pencil icon in the footer section located in the right-hand side.
5. Go to the Add payment details and footer field, then type in your banking details.
6. Click Done.

More details about this feature are discussed in this article: Customise Invoices, Estimates, and Sales Receipts in QuickBooks Online.

Aside from that, you can also accept online payments through PayPal (credit card payments) or Direct Debit using GoCardless. Check out these links and articles for more details: 

• https://quickbooks.intuit.com/uk/payments/gocardless/
• Learn More About GoCardless Direct Debit for QuickBooks
• Accept Card Payments with PayPal App FAQ

Reach out to us again anytime you need more help when working in QuickBooks Online. The Community is open 24/7 to make sure everything is sorted out.