Jan 21 (Reuters) - Lebanon's draft budget for 2022 applies exchange rates ranging between 15,000 and 20,000 Lebanese pounds per dollar for operating expenses and projects a deficit of 20.8%, an official source told Reuters on Friday.

A copy of the draft budget seen by Reuters projected revenues of 39.15 trillion Lebanese pounds and spending of 49.42 trillion pounds.

The source said an exchange rate was not mentioned in the draft because a range of rates were applied.

The Lebanese pound has lost more than 90% of its value since the country descended into financial crisis in 2019. (Reporting by Laila Bassam; Writing by Nayera Abdallah; Editing by Tom Perry and Alex Richardson)