Let’s work together to troubleshoot the issue with accessing your last year’s tax summary in QuickBooks Self-Employed, Sarah.
To start, I recommend clearing your browser's cache. This can help eliminate any temporary data that might be affecting the performance of QuickBooks Self-Employed. Once cleared, restart your browser and access the tax summary.
If the issue persists, consider switching to a different browser to help identify the problem.
If you have further questions, feel free to add a reply.