National Savings and Investments (NS&I), formerly called the Post Office Savings Bank and National Savings, is a state-owned savings bank in the United Kingdom. It is both a non-ministerial government department and an executive agency of HM Treasury. The aim of NS&I has been to attract funds from individual savers in the UK for the purpose of funding the government's deficit. NS&I attracts savers through offering savings products with tax-free elements on some products, and a 100% guarantee from HM Treasury on all deposits. As of 2017, approximately 9% of the government's debt is met by funds raised through NS&I, around half of which is from the Premium Bond offering.