Hearts anticipate "further battles ahead" after a resolution was agreed with Her Majesty's Revenue and Customs in a dispute over tax and national insurance contributions.
The £1.75million dispute was revealed in the share issue brochure as Hearts launched a scheme to raise £1.79m at the end of October.
Now Hearts have come to an agreement to pay £1.5m - £1.2m in tax and NIC, plus £300,000 in interest - over a three-year period.
The deal is separate to the settlement of a £450,000 bill yesterday which staved off the threat of a winding-up order.
In attempting to galvanise further support for the share issue scheme, which runs until December 19, director Sergejus Fedotovas warned of additional troubles at Hearts, where there is a myriad of financial issues.
"The share issue is designed to create stability and it is important to achieve the targets we have set," Fedotovas said on the club's official website.
"Unless these targets are hit, going forward we forecast that there will be further battles ahead when it comes to timely payment of bills.
"In this scenario, we will be forced again to look at what we can do with our cost base as all revenue streams are sweating at the moment and there is no reasonable expectation that we can bring significantly more revenue to the club at this moment."