In February 2009, after Supreme Audit Court of Iran reported that $1.058 billion of surplus oil revenue in the (2006–2007) budget hadn't been returned by the government to the national treasury, Ali Larijani, Iran's parliamentary speaker, called for further investigations to make sure the missing funds are returned to the treasury as soon as possible.
Tensions between Larijani and Ahmadinejad continued into 2013.

Ahmadinejad criticized the National Audit Office for what he called its "carelessness", saying the report "incites the people" against the government.
The head of the parliament energy commission, Hamidreza Katouzian, reported "The government spent $5 billion to import fuel, about $2 billion more than the sum parliament had authorized."
Katouzian quoted Iran's Oil Minister, Gholam-Hossein Nozari, as saying that President Ahmadinejad had ordered the extra purchase.

In May 2011, several members of parliament threatened to initiate impeachment proceedings against Ahmadinejad after his merger of eight government ministries and the firing of three ministers without parliament's consent.
According to the Majles news website, MP Mohammad Reza Bahonar stated, "legal purging starts with questions, which lead to warnings and end with impeachment."
On 25 May, parliament voted to investigate another allegation, that Ahmadinejad had committed election irregularities by giving cash to up to nine million Iranians before the 2009 presidential elections.
The vote came within hours after the allegations appeared in several popular conservative news sites associated with supreme leader Ali Khamenei, suggesting the supreme leader supported the investigation.
The disputes were seen as part of the clash between Ahmadinejad and other conservatives and former supporters, including supreme leader Khamenei, over what the conservatives see as Ahmadinejad's confrontational policies and abuse of power.
In February 2009, after Supreme Audit Court of Iran reported that $1.058 billion of surplus oil revenue in the (2006–2007) budget hadn't been returned by the government to the national treasury, Ali Larijani, Iran's parliamentary speaker, called for further investigations to make sure the missing funds are returned to the treasury as soon as possible. Tensions between Larijani and Ahmadinejad continued into 2013.
Ahmadinejad criticized the National Audit Office for what he called its "carelessness", saying the report "incites the people" against the government. The head of the parliament energy commission, Hamidreza Katouzian, reported "The government spent $5 billion to import fuel, about $2 billion more than the sum parliament had authorized." Katouzian quoted Iran's Oil Minister, Gholam-Hossein Nozari, as saying that President Ahmadinejad had ordered the extra purchase.
In May 2011, several members of parliament threatened to initiate impeachment proceedings against Ahmadinejad after his merger of eight government ministries and the firing of three ministers without parliament's consent. According to the Majles news website, MP Mohammad Reza Bahonar stated, "legal purging starts with questions, which lead to warnings and end with impeachment." On 25 May, parliament voted to investigate another allegation, that Ahmadinejad had committed election irregularities by giving cash to up to nine million Iranians before the 2009 presidential elections. The vote came within hours after the allegations appeared in several popular conservative news sites associated with supreme leader Ali Khamenei, suggesting the supreme leader supported the investigation. The disputes were seen as part of the clash between Ahmadinejad and other conservatives and former supporters, including supreme leader Khamenei, over what the conservatives see as Ahmadinejad's confrontational policies and abuse of power.
Mahmoud Ahmadinejad