The revenue deficit for the Department stood at Rs 5,806 crore (2011-12), Rs 5,426 crore (2012-13) and Rs 5,473 crore (2013-14).
"It is a fact that there has been a revenue deficit in the Department of Post since the last few years. There are two major components of expenditure -- salary and pension. More than 90 per cent of expenditure is incurred on these two components," Communications Minister Manoj Sinha said in a written reply to the Lok Sabha.
"Given the responsibility of providing services to addressees at reasonable costs coupled with ever increasing cost of fuel, AMC, transportation of postal articles including rail and air freight charges, there is an impact on the operational cost of postal network," he said.
He added that despite the increasing cost, the Postal Department continues to make efforts to limit the expenditure within budgetary allocation.
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Responding to a separate query, Sinha said the Postal Department has proposed to open 400 new branch post offices and 412 new sub-post offices by redeployment and relocation during the current five-year plan ie 2012-13 and 2016-17 under the Plan Scheme -- Rural Business and Access to Postal Network.
"Targets for opening of new branch post offices and sub-post offices during the current financial year 2016-17 are 97 and 90, respectively," he said.