Raw Knowledge has signed a deal with Tutman Fund Solutions Limited (TFSL) to provide excess reportable income (ERI) data across its £11bn fund range, as demand grows for more accurate offshore tax reporting. Under the agreement, Raw Knowledge will supply ERI data covering TFSL’s portfolio of 150 funds, supporting the fund services provider’s wealth manager and institutional investor clients with tax reporting on offshore investments. The partnership comes as the use of offshore funds continues to grow, particularly within model portfolio services (MPS), increasing the need for accurate ERI data. Investors holding offshore funds in general investment accounts may face tax liabilities on undistributed income, even if they have not received a payment. Raw Knowledge managing director Preya Patel said: “ERI data remains notoriously fragmented and difficult to source, yet the consequences of getting it wrong can be costly for investors and time-consuming for the firms who support them with reporting.