A recent report by a Delhi-based think tank has revealed that during 2015-2016, total income of five national parties - Bahujan Samaj Party (BSP), Nationalist Congress Party (NCP), Communist Party of India (Marxist)(CPM), Communist Party of India (CPI) and All India Trinamool Congress (AITC)- was slightly over Rs 200 crore.

However, the main political parties Bharatiya Janata Party (BJP) and Indian National Congress (INC) have not filed their audit reports yet.

The Association for Democratic Reforms (ADR) along with National Election Watch (NEW) undertook detailed analysis of income and expenditure of national plitical parties for seven national parties, including AITC, which was declared a national party in September 2016.

As per the report, total income of five national parties (BSP, NCP, CPM, CPI and AITC) during financial year 2015-16 stood at Rs 200.76 crore, of which only 2.37 per cent i.e., Rs 4.75 crore was received from known donors.

Another 66.92 per cent of the total income, i.e. Rs 134.35 crore, was received from other known sources such as sale of assets, membership fees, bank interest, sale of publications, party levy etc. The remaining, 30.71 per cent i.e. Rs 61.66 crore, of their income, is from unknown sources.

A party-wise analysis has revealed that among the national parties, the CPM received Rs 45.14 crore, and the AITC received Rs 9.72 crore from unknown sources. Also, CPM has shown the highest income amongst the national parties with a total income of Rs 107.48 crore while BSP ranks second with income of Rs 47.385 crore and CPI could manage only Rs 2.176 crore during the FY 2015-16.

The report also pointed out that India's largest political fronts - BJP and Congress- have failed to submit their audit reports.

"As on 1st May, 2017, BJP and INC have not yet submitted their audited reports to the ECI, almost six months after the due date for submission," the report said.

The due date for submission of annual audited accounts for the parties was October 31, 2016.

"AITC, CPM and BSP were the only three national parties to submit the audit reports on time. CPI submitted its audited report on November 17, 16 days after the due date for submission, NCP submitted its audited report on March 1, 2017, almost four months after the due date for submission," the report said.