Ruined several times for bad business, their economic situation improved in Santiago organizing the famous Coffee of the Union.

The June 19 of 1830, he was named Finance Minister in the administration of Don José Tomás Ovalle.

One of the most remarkable works of Rengifo, as finance minister, he was the tax and customs reform.

Ovalle, satisfied with the achievements of the Minister Rengifo, who remained in office until his death in 1831, after this Rengifo remained vice president of Fernando Errázuriz Aldunate and the official presidency José Joaquín Prieto.

The October 28, 1841 he was again elected minister in the government of President Manuel Bulnes Prieto, and deputy in the Ministry of Interior and Foreign Affairs (December 17, 1841).