New Delhi: Amid rising criticism over steep hike in fuel prices, senior Congress leader P. Chidambaram on Wednesday claimed it was possible to cut up to Rs25 per litre in petrol prices but the government will not do so.

In a series of tweets, the former finance minister said the bonanza to central government is Rs25 on every litre of petrol and this money rightfully belongs to the average consumer.

“Central government saves Rs15 on every litre of petrol due to fall in crude oil prices. Central government puts additional tax of Rs10 on every litre of petrol. It is possible to cut up to Rs25 per litre, but the government will not. They will cheat the people by cutting price by Rs1 or 2 per litre of petrol," he said on Twitter.

More than a week after state-owned oil firms ended a 19-day pre-Karnataka poll hiatus on revising fuel prices, petrol and diesel rates have touched record highs. Petrol costs Rs76.87 per litre in Delhi and diesel costs Rs68.08 a litre.

In the last nine days, petrol price has risen by Rs2.24 a litre and diesel by Rs2.15. Rates vary from state to state depending on the incidence of local sales tax or VAT. The prices in Delhi are the cheapest among all metros and most state capitals.

The central government levies Rs19.48 a litre of excise duty on petrol and Rs15.33 per litre on diesel. State sales tax or VAT varies from state to state. Unlike excise duty, VAT is ad valorem and results in higher revenues for the state when rates move up.

In Delhi, VAT on petrol was Rs15.84 a litre, and Rs9.68 on diesel in April. Now, it is Rs16.34 on petrol and Rs10.02 a litre on diesel. Every rupee cut in excise duty on petrol and diesel will result in a revenue loss of Rs13,000 crore.

The government had raised excise duty nine times between November 2014 and January 2016 to shore up finances as global oil prices fell, but then cut the tax just once in October last year by Rs2 a litre. Subsequent to that excise duty reduction, the Centre had asked states to also lower VAT.

Just four of them—Maharashtra, Gujarat, Madhya Pradesh and Himachal Pradesh—reduced rates while others including BJP-ruled ones ignored the call.

In all, duty on petrol rate was hiked by Rs11.77 per litre and that on diesel by Rs13.47 a litre in those 15 months that helped governments excise mop up more than double to Rs242,000 crore in 2016-17 from Rs99,000 crore in 2014-15.