Avebury Taverns' 728 lessees and tenants are set to gain a boost from a new five-year deal with distributor Tradeteam.
From next week they need have only one delivery a week carrying products from the company's four suppliers.
It comes as the Buckinghamshire-based operator continues to look for packages of pubs to expand its national estate.
Its plans are unaffected by a decision by Japanese bank Daiwa Europe to put its principal finance arm up for sale.
Daiwa has backed Avebury with a finance package since the company was formed in 1997 by buying 147 pubs from Wolverhampton and Dudley Breweries (W&DB).
Avebury managing director David Myers said: "With the agreement with Tradeteam, we are putting our operations infrastructure in place.
"It will provide a big upside for our tenants since they will have to place only one order to take products from four different suppliers."
Its tenants are supplied by Bass and Whitbread nationally and by Scottish Courage in the North and W&DB in the Midlands.
The estate, which is currently enjoying "reasonably encouraging trade", has continued growing by individual acquisitions.
Myers said: "We are still in the market for portfolios on a selective basis."