Adviser platform Transact is cutting its annual commission charge from 0.27% to 0.26% from July.
The platform says it is reducing charges to share the benefits of scale economies with advisers.
The reductions are the 15th since 2008 and the company says 167,000 clients will benefit.
The buy commission exemption threshold will also be reduced from £300,000 to £200,000 from 1 March.
The annual commission charge will fall from 0.27% to 0.26% (for the respective charging band) from 1 July.
Where portfolios are linked, the total value of the linked portfolios is used.
Jonathan Gunby, CEO at Transact, said: “We are pleased to be reducing our charges again, in a measured way, to balance our desire to share the benefits of our scale economies while investing in our service delivery for advisers and clients.
“More than 167,000 clients will see lower charges and those portfolios valued between £200,000 – £300,000 will enjoy both reductions.”
The reductions follow the waiver of the £20 quarterly wrapper fee for SIPP and personal pensions for children in linked family groups until they turn 18.
This earlier reduction, announced in October, was part of plans from the platform to make it more attractive for inter-generational investment management.
It is a 54% increase on the first quarter of the previous financial year and a 22% increase on the platform’s previous best first quarter (2018: £1.06bn). Gross inflows were £1.98bn.
At the end of the quarter funds under direction for the platform totalled £54.54bn, an increase of 4.7% over the quarter.
The last financial year was a strong one for Transact, with the platform reporting a record £7.7bn of gross inflows for the year ending 30 September. Annual net inflows were £4.95bn – a rise of 38% year on year.