Employer contributions that are not tied to elective deferrals have to be created by the submitting deadline on the employer's tax return, including extensions. Contribution deadline: Businesses will have to make contributions via the small business's tax-filing deadline. They have to deposit income deferral contributions from workers no later on https://kingswoodhomes.uk.com/news/give-your-deposit-a-boost-this-summer-with-kingswood-homes/