Even the popular Polish adventure of Charles X of Sweden was strenuously opposed by Bonde, though when once it was decided upon he materially assisted the king to find the means for carrying it on. He was also in favour of strict economy coupled with the recovery of the royal domains which had fallen into the hands of the nobles, though his natural partiality for his fellow-peers came out clearly enough when in 1655 he was appointed a member of Charles X's land-recovery commission. In 1660 he succeeded Herman Fleming as Lord High Treasurer, and was one of the council of regency appointed to govern Sweden during the minority of Charles XI of Sweden.