Knowledge Bank has added four lenders to its AffCalc affordability platform, expanding the range of lender-approved models available to brokers at the start of 2026.

Gen H, April Mortgages, West One and Bluestone Mortgages are now live on AffCalc, Knowledge Bank’s affordability assessment tool designed to combine lender criteria with affordability calculations in a single workflow.

Each lender has worked with the Knowledge Bank team to integrate its own affordability model into the system, ensuring brokers are viewing results based on lender-approved logic rather than generic assumptions.

The approach reflects AffCalc’s reliance on live Knowledge Bank criteria, which already underpins case sourcing on the platform. By using the same criteria logic alongside affordability calculations, the tool aims to help brokers identify viable lending options earlier in the advice process.

Brokers complete a single form, after which the system filters out lenders that do not meet the case parameters, leaving only those aligned with both affordability and criteria requirements. The intention is to reduce the need for multiple individual calculator checks and limit time spent pursuing options that are unlikely to proceed.

Marie Grundy at West One said: “West One are delighted to be partnering with Knowledge Bank with the launch of AffCalc, allowing brokers to access instant affordability decisioning for residential mortgage customers whilst instantaneously running real time criteria checks in the background.

This is such a valuable tool for intermediaries when you consider not only the time saving efficiencies, but also the unique combination of simultaneous affordability and criteria verification which is another example of the innovation that the team at Knowledge Bank continue to deliver.”

Sarah Palmer at Gen H added: “We’re really excited to be joining AffCalc as having a clear picture of affordability early on in the journey is a critical part of providing the high quality advice that buyers depend on.

Brokers perform a critical service as they source the best possible lender and product for each and every buyer – and we’re looking forward to working with Knowledge Bank in 2026 and beyond”.

STRONG LENDER ENGAGEMENT

According to Knowledge Bank, the latest additions reflect growing lender engagement with the platform, with each provider working through technical and policy alignment to ensure their propositions are accurately represented.

Commenting on the lenders joining AffCalc, Shane Chawatama said: “It’s been encouraging to see the level of engagement from lenders as AffCalc develops. Close collaboration with lender technology teams has been essential in making sure brokers have reliable access to approved affordability models.

As we move into 2026, AffCalc will remain an important part of how we support brokers and lenders with clearer, more informed decision-making.”

Knowledge Bank said it plans to continue expanding AffCalc’s lender coverage during 2026 as part of its wider development roadmap.