Currently, setting your preferred billable time format to decimal when sending an invoice to your client isn't available in QuickBooks Online (QBO), @chittermorree. I'm here to provide further details about this.

When you enter your client's billable time, you'll have to use the default ratio format (hours: minutes). However, it'll automatically be converted to the decimal format (i.e 0.00) when you add it to an invoice. Then, the said format will be converted back to the first-mentioned one when you print and send the invoice.

In the meantime, you can explore a third-party application that can make decimal as your preferred format for your billable invoices. Just look for a compatible app through the Apps menu or the QBO app store.

In case you want to customize your invoices to include information that matters most to your business, you can refer to this article: Customize invoices in QuickBooks Online. It also contains details about personalizing your invoice email message.

Additionally, I'd recommend visiting our blog site. This way. you'll get the program's latest upgrades, news, and features: The QuickBooks blog.

Please let me know if you have other concerns. I'm just around to help.