Singapore GST Registered Company but Home Currency is in USD. How do i file GST?

I can help you with your Home Currency and how it works in your taxes and reporting in QuickBooks Online, Carlson4. Let's work together to ensure everything is clear and manageable.

With QuickBooks Online, you can make and receive payments in foreign currencies from customers, suppliers, or bank accounts that don't use your home currency. However, once you have turned on the Multicurrency feature, you can no longer change your home currency to prevent messing up the account.

When you set up your Home Currency in QuickBooks Online, you'll need to select your company's location or region for tax and reporting purposes. The reports and sales invoices tax will always show the currency value in your home currency.

As a workaround, you can look for third-party applications to help convert home currency.

I'm also adding these resources for additional information: Enter home currency adjustments for your foreign balances.

Drop by here if you have other questions about running reports, invoices, or managing your currencies in QuickBooks Online. It's always my pleasure to assist you. Have a nice day.

@Carlson4 

Consider to open a new QBO account and purchase a 3rd party service to convert your data from the old QBO account to the new one with SGD as the home currency.