Tosach Castle was a castle belonging to the Tosachs of Monzievaird however nothing of it now remains.

Around 1492 Andrew Toschach of Monzievaird was given the task of apprehending certain rebels by James IV.

Toshache is marked as a two or three storey tower with attached lower wing on Pont’s map of Lower Glen Almond & Strathearn from the late 16th century.

In the late 17th century the estates of Monzievaird and Ochtertyre, including Tosach, were acquired by the Murray family, possibly when the last Tosach laird emigrated to America in 1684. They may have installed a tacksman in the castle, giving rise to the later name of Taxman’s Castle.

The castle seems to have been destroyed by a Murray of Ochtertyre in the 19th century, although there are conflicting reports as to by which one and when. One source states that Sir William Murray of Ochtertyre had the last tenant of the castle removed in the mid-19th century while another states that Sir William removed the last remains of the castle in the very early 19th century. Since Sir William was born in 1801 it would seem that it would have been his father, Sir Patrick Murray of Ochtertyre, who was responsible in this version of the story.

Today the site of the castle falls within a field that was known in the 19th century as Tosach’s Park, but there are no visible remains.