Moffat was viewed as a conservative who believed that Rhodesia would eventually join the Union of South Africa. He oversaw the purchase, for £2 million, of the British South Africa Company's remaining mineral rights in Southern Rhodesia. His government passed the 1930 Land Apportionment Act, which defined the pattern of land allocation and ownership and is viewed as being one of the ultimate causes of the land disputes during land reform in Zimbabwe from 2000. He resigned in 1933 and was succeeded by George Mitchell. In the 1933 general election he lost his seat. On 6 July 1933 he was granted retention of The Honourable for life.
