Lambeth Council's debt stood at £1.116 billion as of 30 June 2025, according to the Treasury Management Quarterly Performance Report presented at a Corporate Committee meeting on Thursday 25 September 2025. The debt is largely composed of £1.081 billion borrowed from the Public Works Loan Board (PWLB), with an additional £35 million sourced from local authorities.

The council's gross debt saw a net decrease of £12.8 million from 31 March 2025. This decrease is attributed to the repayment of one loan of £12.8m, with no new borrowing undertaken during the quarter. The debt has a weighted average interest rate of 4.27%. The council's investment balance was £65.9 million, earning an average interest rate of 4.33%.

The year-to-date interest income from treasury investments is £0.55 million, and from non-treasury investments, it is £0.18 million, totalling £0.73 million against a full-year budget of £5.4 million.

The Treasury Management Quarterly Performance Report stated that the council's investment strategy prioritises security and liquidity.

According to the agenda for the meeting, the Corporate Committee includes Councillor Rebecca Spencer (Chair), Councillor Ibtisam Adem, Councillor Matthew Bryant, Councillor Judith Cavanagh and Councillor Jackie Meldrum.