One government-run newspaper claimed Ms Suu Kyi - who has spent 11 of the past 17 years in detention and remains under house arrest - was evading taxes by spending her money from the 1991 Nobel peace prize and other awards overseas.
The opposition leader was awarded the Nobel prize for her non-violent resistance to the Burmese military junta which crushed the democracy movement to seize power in 1988.
The junta regularly describes her as a threat to national unity, and refused to hand over power when her party won a landslide election victory in 1990.
Today's attacks saw the New Light of Myanmar newspaper claiming that Ms Suu Kyi - who has won almost 100 other peace prizes - "avoided paying taxes to the state by asking her family members abroad to spend all her cash awards abroad".
Ms Suu Kyi was awarded 6m Swedish kronor (£435,000) when she won the Nobel peace prize. The average annual income in Burma has been estimated at $175 (£90) a year, with child malnutrition and mortality rates reportedly rising.
Human rights groups have repeatedly called for international action and economic boycotts of the country. State-backed torture, rape and killings are widespread, and more than 1,000 of Ms Suu Kyi's supporters are in prison.
Last week, a draft UN security council resolution urging Burma to ease repression and release political prisoners was vetoed by Russia and China.
The resolution, put forward by the US and Britain, called on the military government to stop the persecution of political opponents and minority groups.
