Myanmar has announced a deal with international lenders to cancel nearly $6bn of its debt.
The country also cleared its arrears to the World Bank and the Asian Development Bank (ADB) with the help of a bridge loan from Japan, removing another crucial hurdle for the resumption of international aid.
Myanmar said on Monday that the Paris Club of creditor nations had agreed at a meeting on Friday to write off half of its debts to the group in two phases, with the remaining amounts to be rescheduled over 15 years.
There was no immediate comment from the club, an informal grouping of industrialised nations.
According to Myanmar, Japan has committed to cancel arrears worth more than $3bn while Norway is writing off $534m.
It said other bilateral donors were expected to follow suit.
Myanmar's finance minister, Win Shein, said the agreement heralded the beginning of "an era of new relationships in which Myanmar is committed to fully co-operate with all the members of the Paris Club", according to a government statement.
He said Myanmar would use the resources made available by the debt relief for development and poverty reduction programmes.
Japan had already announced plans to cancel some of Myanmar's debt, saying last April it would forgive $3.3bn it was owed.
The moves follow a string of dramatic political reforms in Myanmar, which is seeking development assistance and foreign investment to boost its ailing economy as it emerges from decades of military rule.
In another landmark, Myanmar restructured more than $900m of debts to the World Bank and the ADB, enabling the two development lenders to resume assistance to the country after a decades-long absence.
"Myanmar has come a long way in its economic transformation, undertaking unprecedented reforms to improve people's lives, especially the poor and vulnerable," Annette Dixon, World Bank's Myanmar director, said.
The World Bank in November pledged $245m of aid to support Myanmar's economic development.
The Washington-based institution closed its Yangon office in 1987 and ceased new lending after the then-ruling junta stopped making payments on debts worth hundreds of millions of dollars left from previous programmes.
The Manila-based ADB said Monday that it planned "major investments" in road, energy, irrigation and education projects, hailing its return to Myanmar as a "historic tipping point".
President Thein Sein has overseen a series of dramatic reforms since taking office in 2011, including the release of political prisoners and the election of Nobel Peace Prize winner Aung San Suu Kyi to parliament.
In response, the West has begun rolling back sanctions and foreign firms are lining up to invest in the country, eyeing its huge natural resources, large population and strategic location between China and India.