According to U.S. Undersecretary of State William Burns, Iran may be losing as much as $60 billion annually in energy investment.
Sanctions are making imports 24% more costly on average.
In addition, the latest round of sanctions could cost Iran annually $50 billion in lost oil revenues.
Iran is increasingly using barter trade because its access to the international dollar payment system has been denied.
According to Iranian officials, large-scale withdrawal by international companies represents an "opportunity" for domestic companies to replace them.

The IEA estimated that Iranian exports fell to a record of 860,000 bpd in September 2012 from 2.2 million bpd at the end of 2011.
This fall led to a drop in revenues and clashes on the streets of Tehran when the local currency, the rial, collapsed.
September 2012 output was Iran's lowest since 1988.

The U.S. Energy Department has warned that imposing oil embargoes on Iran would increase world oil prices by widening the gap between supply and demand.
According to the U.S. Iran could reduce the world price of crude petroleum by 10%, saving the United States annually $76 billion (at the proximate 2008 world oil price of $100/bbl).

According to NIAC, sanctions cost the United States over $175 billion in lost trade and 279,000 lost job opportunities.
Between 2010 and 2012, sanctions cost the E.U. states more than twice as much as the United States in terms of lost trade revenue.
Germany was hit the hardest, losing between $23.1 and $73.0 billion between 2010–2012, with Italy and France following at $13.6-$42.8 billion and $10.9-$34.2 billion respectively.

GDP growth turned negative in 2013 (−5%).
The unofficial unemployment rate was 20% by mid-2012.
Oil exports dropped to 1.4 million bpd in 2014 from 2.5 million bpd in 2011.
By 2013, Iran had $80 billion in foreign exchange reserves frozen overseas.
Automobile production declined 40% between 2011 and 2013.
According to the U.S. government in 2015, Iran's economy has reached a point where it is "fundamentally incapable of recovery" without a nuclear accommodation with the West.

The tentative rapprochement between Iran and the US, which began in the second half of 2013, has the potential to become a world-changing development, and unleash tremendous geopolitical and economic opportunities, if it is sustained […] if Iran and the US were to achieve a diplomatic breakthrough, geopolitical tensions in the Middle East could decline sharply, and Iran could come to be perceived as a promising emerging market in its own right.

In January 2019, President Hassan Rouhani blamed the US for Iran's declining economy.
Following the US pullout from an international nuclear deal with Iran and re-imposed sanctions, Iran faced the toughest economic situation in 40 years.
According to U.S. Undersecretary of State William Burns, Iran may be losing as much as $60 billion annually in energy investment. Sanctions are making imports 24% more costly on average. In addition, the latest round of sanctions could cost Iran annually $50 billion in lost oil revenues. Iran is increasingly using barter trade because its access to the international dollar payment system has been denied. According to Iranian officials, large-scale withdrawal by international companies represents an "opportunity" for domestic companies to replace them.
The IEA estimated that Iranian exports fell to a record of 860,000 bpd in September 2012 from 2.2 million bpd at the end of 2011. This fall led to a drop in revenues and clashes on the streets of Tehran when the local currency, the rial, collapsed. September 2012 output was Iran's lowest since 1988.
The U.S. Energy Department has warned that imposing oil embargoes on Iran would increase world oil prices by widening the gap between supply and demand. According to the U.S. Iran could reduce the world price of crude petroleum by 10%, saving the United States annually $76 billion (at the proximate 2008 world oil price of $100/bbl).
According to NIAC, sanctions cost the United States over $175 billion in lost trade and 279,000 lost job opportunities. Between 2010 and 2012, sanctions cost the E.U. states more than twice as much as the United States in terms of lost trade revenue. Germany was hit the hardest, losing between $23.1 and $73.0 billion between 2010–2012, with Italy and France following at $13.6-$42.8 billion and $10.9-$34.2 billion respectively.
GDP growth turned negative in 2013 (−5%). The unofficial unemployment rate was 20% by mid-2012. Oil exports dropped to 1.4 million bpd in 2014 from 2.5 million bpd in 2011. By 2013, Iran had $80 billion in foreign exchange reserves frozen overseas. Automobile production declined 40% between 2011 and 2013. According to the U.S. government in 2015, Iran's economy has reached a point where it is "fundamentally incapable of recovery" without a nuclear accommodation with the West.
The tentative rapprochement between Iran and the US, which began in the second half of 2013, has the potential to become a world-changing development, and unleash tremendous geopolitical and economic opportunities, if it is sustained […] if Iran and the US were to achieve a diplomatic breakthrough, geopolitical tensions in the Middle East could decline sharply, and Iran could come to be perceived as a promising emerging market in its own right.
In January 2019, President Hassan Rouhani blamed the US for Iran's declining economy. Following the US pullout from an international nuclear deal with Iran and re-imposed sanctions, Iran faced the toughest economic situation in 40 years.
Economy of Iran