I printed T5018, on review I found a couple mistakes. I need to reprint 2 T5018 and a new summary

It's a great idea to always have a copy of your forms so you can access them whenever you need. We'd be happy to help you go over how to reprint your T5018 forms along with a new summary in QuickBooks Online (QBO) due to mistakes found upon review, caroldonpittman. 

We'll need to identify and correct the specific vendors involved in the T5018 forms that contain errors. Here's how:

1. Navigate to the Expenses menu and choose Vendors.
2. Locate the transactions or details specific to the vendors involved in the T5018 forms that contain errors.
3. Edit and correct the transaction details as required (such as payment amounts, dates, or vendor information).

Once done, we can prepare the T5018 forms and reprint them again with the correct data and summary. Here's how: 

1. Go to Expenses and select Suppliers (Take me there),
2. Select Prepare Tax Slips. Note that you can exit the feature at any time and it will automatically save what you’ve done and allow you to resume where you left off.
3. Choose the T5018 form type to prepare. 
4. Select the time period. To prepare the T5018 forms, you can choose between past calendar or fiscal year.
5. Confirm your company details on the next page and adjust as needed for filing.
6. Select the correct account you used to make payments to your contractors.
7. Review the details of payments made and click on the amounts if you’d like to see more details. This takes you to the detailed report in the reports section outlined below. Click back at any time to return to the list view. You can un-check contractors you do not want to file forms for in this step.
8. Ensure that your contractor details are correct. If not, update them in the Supplier profile.
9. Click the Download option to select the method to save it.

To learn more about this one, you can check out this article: Using T4A and T5018 forms in QuickBooks Online. 

Once done, we can verify the contractor payment amounts by running a T5018 Detail report. This provides the individual payment details for each supplier being tracked. Let me guide you on how: 

1. Go to Reports (Take me there).
2. Scroll down and find the Expenses and Suppliers section.
3. Select the T4A Detail or T5018 Detail report.
4. The T5018 Detail report defaults to the last fiscal year and we can change the dates under the Report period.
5. Use the Contractor filter option to view information that pertains to specific contractors.
6. Then, use the Accounts filter option to select the correct accounts that the contractor payments were recorded under. This ensure the T5018 amounts as entered on their respective slips are correct.

Moreover, you can refer to this article about the recent updates made by the CRA to electronically file 2024 T4, T4As, and T5018s in QuickBooks Online, refer to this article: Changes to T4, T4A, T5018 XML electronic filing to CRA.

Don't hesitate to reply to me or drop by the Community again if you need more help with recording payments made to subcontractors or any QuickBooks-related concerns. The Community is always ready to offer guidance and support, caroldonpittman.