It applies to sole traders and landlords registered for Self Assessment when their qualifying self employment and property income is above the relevant threshold. Those with qualifying income over £50,000 for 2024 to 2025 should have started from 6 April 2026. The threshold is over £30,000 for a 6 April 2027 start and over £20,000 for a 6 April 2028 start. We can review your tax records and help confirm when the rules apply to you.