I would like to name a column in the bills called "Service Month" . Is this customization possible

Hello there, jayanth-mobiuste,

Customizing bill template is currently unavailable. I can see how this feature would be beneficial to your business.

You can visit our QuickBooks Blog for the latest news and updates about newly added features.

For future reference, you may want to read these articles:

• How to customize invoices, estimates, and sales receipts
• How to customize reports

Please know that you're always welcome to post if you have any other concerns.