Pa­kistan will get a new fi­nance min­is­ter af­ter the in­cum­bent lost sup­port from his po­lit­i­cal party for agree­ing to aus­ter­ity mea­sures in an ef­fort to win a bailout from the In­ternational Mon­e­tary Fund.

Mif­tah Is­mail, who has been fi­nance min­is­ter since the cur­rent gov­ern­ment came to power in April, said on Twit­ter late Sun­day that he would for­mally ten­der his res­ig­na­tion on Mon­day.

Ishaq Dar, who has served three times pre­vi­ously as fi­nance min­is­ter, told re­porters in Lon­don on Mon­day—where he has lived in ex­ile since 2017—that he will re­turn to Pa­kistan this week to take the job again.

He has pub­licly said that the terms of an IMF pro­gram, com­pleted in Au­gust, were too se­vere. The IMF re­quired the re­moval of sub­si­dies and the im­po­si­tion of new taxes. Gas prices, in par­tic­u­lar, in­creased sharply as a re­sult.

Mr. Dar would be­come Pa­kistan’s sixth fi­nance min­is­ter in the last four years, a turnover rate that added to the coun­try’s eco­nomic un­certainty.