How do I change my business' fiscal year? When creating a budget I only seen Jan - Dec but need April - March.

I'd gladly help you change your business's fiscal year, Abigail. 

Changing your business's fiscal year will also change the budget period. Here's how:

1. Go to the Gear icon, then select Accounts and settings.
2. Open the Advanced tab and choose the Accounting section.
3. Click the pencil icon and choose April as the first month of fiscal year.
4. Hit Save, then Done.

For further guidance, visit this article: Create budgets in QuickBooks Online.

In case you want to learn how to create and edit your budgets with Spreadsheet Sync, you can check out this article: Create and edit budgets in Spreadsheet Sync for QuickBooks Online Advanced.

You can always get back to this thread if you have any other concerns besides changing your business's fiscal year. Just leave a reply below.