The Grand Mufti of Saudi Arabia and the Chairman of the Council of Great Scholars Al-Sheikh Abdul Aziz Al-Sheikh says that paying Sadaqat al-Fitr in cash is once morest the Sunnah.
Note that Sadaqat al-Fitr is paid in cash across Pakistan, and the majority usually pay just before the Eid prayer, although Sadaqat al-Fitr can be paid any time before the Eid prayer.
According to the Saudi Press Agency (SPA), Grand Mufti said that ‘Sadaqat al-Fitr is given to human food from wheat, rice, raisins and barley among other things. Muslims pay Sadaqat al-Fitr before sunset on the last day of Ramadan, but Sadaqat al-Fitr can be paid one or two days before Eid.