Whatever date I put in for a business mileage trip the summary registers it as the day before? eg. 1st August appears as 31st July? Is this a glitch or settings issue?

You've come to the right place. Let me provide you information about business mileage in QuickBooks Online, philsims.

This issue has already been resolved. If you're still experiencing issues while editing a business mileage trip, let's perform some troubleshooting steps to resolve this. 

Sometimes, the browser is full of frequently accessed page resources, causing some unusual responses to the page. To isolate this, try logging into your QuickBooks Online (QBO) account using a private browser (incognito). Here's how:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Safari: Command + Option + P

If it works, clear your browser's cache to speed up the loading process of the QBO website and for the system to start fresh. You can also use a different browser.

However, if the same thing happens, I suggest contacting our support team to reinvestigate this further. They have the tools to pull up your account in a secure environment. 

For your reference, you can read these helpful articles that contain more information.

Don't hesitate to keep in touch if you have any questions. I'll be right here to further assist you at any time of the day.