Irregular deposits are fine but there can be a bit of trouble depending on how irregular the payments made are. This is because an underwriter is looking to ensure that you can make regular payments when your mortgage is approved. If you only have irregular payments within your deposit then this doesn’t give the underwriter any proof that you can make regular payments on time. Other forms of irregular deposits can include a gift from a family member which are not included as proof as they are most likely to be a one-off payment. If you have an irregular deposit made into your account, make sure that they are older than 60 days old as this won’t matter regardless.