The deal was struck in the summer of 2012 when the Ibrox club dropped down into the Third Division, with a clause inserted into the broadcast agreement to cover the additional costs of having to set up at lower league grounds.
The contracts that were in place between the Scottish Premier League and TV companies became null and void when Rangers were admitted to Scotland's fourth tier and a compromise was reached to allow games involving Ally McCoist's side to still be shown.
SPFL chief executive Neil Doncaster said: "The support given to Scottish football by our broadcast partners, in 2012 and since, has been fundamental to the ongoing health of the game in this country."
The SPL paid the Scottish Football League £800,000 for rights to Rangers' matches in the Third Division during season 2012/13 but that deal was not required for this season after the two league bodies merged last summer.
BT Sport took over ESPN's coverage of Scottish football for the 2013/14 campaign and while the payment is capped at £250,000, it is not known how much has been paid out to the broadcasters to date.
BT Sport said: "[We] were delighted to inherit the SPFL rights from ESPN, however we cannot comment on contractual details."