Can Still use this new mtd approved version to do my self assessment for 2025/2026?

Yes, you absolutely can, @a.fadilepo001. QuickBooks Sole Trader Plus (QBST Plus) is fully equipped to handle your 2025/2026 Self assessment, which covers the tax year ending on 5 April 2026.

Since MTD isn't mandatory for this period, you will still file a traditional return by 31 January 2027. However, if your 2024/2025 turnover exceeded £50,000, you must transition to the new quarterly reporting cycle starting tomorrow, 6 April 2026. Your first MTD update would then be due by 7 August 2026. Using the MTD-approved version now ensures your HMRC connection and digital records are compliant before that first quarter begins.

Refer to this article for additional information: Check your MTD for IT deadlines and obligations in QuickBooks.

If you have any further questions, feel free to reach out.