Many applicants for Universal Credit tend to underestimate their income or fail to report changes in their circumstances, which can affect their claims. It's also common to miss deadlines for submitting evidence or making updates, leading to delays in payments. Additionally, some people overlook the importance of keeping their online account updated or fail to provide complete information when applying. To avoid these pitfalls, carefully review the guidance on the official gov.uk Universal Credit page and consider seeking advice from a professional if you're unsure about the application process.