When you connect your Wise account with accounting softwares, Wise will have access to:
Your organisation name
Your accounting integration bank account details
Wise will not have access to:
Your transactions outside of Wise
Any other financial data
Access based on connection type
Bank Feeds Sync: If you enable only the Bank Feeds Sync, Wise won't access any sensitive information from the accounting software about your transactions or other financial data. Wise will only need your account information and details for each currency account you have activated.
Import Bills to Wise: If you enable the Import Bills feature, Wise will access all bills you've created in Xero to facilitate payments through Wise. This means Wise will have access to that specific data.
Keep in mind that the bills feature is only available with Xero and Quickbooks.