My client's fiscal year starts 15th of march and not 1st of March. How can I give a day to my fiscal year?

Welcome to the Community, NextGenBizSolutions.

Thanks for being part of the QuickBooks family. I’m here to point you in the right direction about adding a date on the fiscal year setup.

QuickBooks Online is currently design to only select the month when entering the fiscal year. While adding a date in the Fiscal Year setup is not yet available, you can visit the Firm of the Future site to see updates about the product and latest applications added to QBO.

To narrow down the process, click on the Product & Industry News link, then choose QuickBooks Product Updates. From there, click on the Canadian Accounting tab. 

Rest assured, I’ll update this thread once there’s progress.

That should get you on the right track. If there’s anything else I can help you with, click on the Reply button below. I’ll jump right back in to assist further.