Arup Biswas Move Triggers Shock TMC Split

Jun 19, 2026 - By Ashutosh Roy Current AffairsElection AnalysisPoliticsRegional UpdatesWest Bengal Politics

Can the Arup Biswas Move Permanently Destroy Mamata’s Power?

The Arup Biswas move to write a direct, explosive letter to HDFC Bank asking to freeze all principal TMC party accounts has sent shockwaves through Kalighat.

Imagine checking your bank statement and finding a zero. Now imagine that happening to a powerful political party with Rs. 675 crore sitting in its vault.

The war drums are beating in West Bengal. Nothing is going well for the Trinamool Congress (TMC) or its supreme leader, Mamata Banerjee.

The ultimate political nightmare has officially arrived, and it didn’t come from the opposition. It came from the ultimate insider. It is no longer a hidden political argument; it is an aggressive, open financial war that has left the central leadership completely paralyzed.

Why Did the Arup Biswas Move Paralyze Mamata Banerjee?

The timing of the Arup Biswas move could not be worse for Mamata Banerjee. Following a devastating defeat in the 2026 Assembly elections, the party is fracturing rapidly. The TMC internal rebellion has exploded onto the front lines.

Look at the devastating numbers tearing the party apart:

• 58 Rebel MLAs in the state assembly have completely broken ranks. Led by Ritabrata Banerjee, they officially secured recognition from the Speaker as the dominant legislature group.
• 20 Rebel TMC MPs in the Lok Sabha have moved away from central leadership. They are actively seeking a merger with the Nationalist Citizens Party of India (NCPI).

By sending a formal, two-page legal letter to the Central Plaza branch of HDFC Bank in Kolkata, Biswas struck the party where it hurts most: its wallet. He demanded an immediate status quo, blocking all debit transactions.

The Arup Biswas move ensures that neither Mamata Banerjee nor her loyalists can touch a single rupee of the party’s massive funds until the leadership crisis is resolved.

Is Subhasish Chakraborty Hiding Something from the CID?

The plot thickens when you look at the chaotic leadership reshuffle. On June 5, 2026, the Mamata Banerjee camp scrambled to contain the bleeding.

They quietly stripped Arup Biswas of his long-held position and named former MP Subhasish Chakraborty as the official TMC cashier and state treasurer.

But a massive controversy erupted during recent CID raids. When investigators turned up the heat, Subhasish Chakraborty curiously failed to clarify his exact status. He did not openly state to the probing officers that he was an authorized office-bearer managing national funds.

More importantly, it remains a dark mystery whether the Mamata faction ever officially informed the bank regarding this sudden leadership switch.

If the private bank was never legally notified with fresh organizational mandates, then in the eyes of the financial system, the newly appointed cashier has no power. This gaping administrative blunder has left the party’s central machinery utterly defenseless against the Arup Biswas move.

Is Arup Biswas Screwing Up Mamata’s Life or Joining the Rebels?

This is the multi-million-rupee question keeping political analysts awake at night. What is the real motive behind the Arup Biswas move? The strategic outcomes of his gamble point to two entirely different political motives:

Potential Strategy	Core Objective	Impact on Mamata Banerjee
Scenario A: Pure Revenge	Inflict maximum damage on Kalighat for stripping his Treasurer title on June 5.	Starves the loyalist camp of dynamic assets needed to maintain statewide operations.
Scenario B: Rebel Alliance	Pave a smooth entry path into the breakaway faction of 58 MLAs and 20 MPs.	Paralyzes the central leadership’s ability to financially penalize or influence dissidents.

If Biswas is simply trying to screw up Mamata’s life, freezing Rs. 675 crore in dynamic assets is the perfect revenge. It starves the loyalist camp of the resources needed to fight back.

However, if he is planning to join the rebel group, this financial strike is a massive peace offering.

By locking down the capital, he prevents the central leadership from using party resources to influence or penalize the breakaway faction.

Why was it necessary to inform the bank officially about an internal TMC split 2026? By putting the party’s legal identity into deep question, Biswas forced the bank’s compliance team to protect themselves. No bank will risk legal liability by releasing funds when the true ownership of an organization is actively contested in public.

In between, Ritabrata and some other MLAs have lodged a complain to the police to freeze the transactions of the TMC Bank Account.

So, Now the battle for the funds have become vivid, as expected. Trinamool Congress is such a party where most of the loyalists joined for their personal gains as the party lacks ideology.

In addition, we have witnessed the criminalization of politics during the regime of TMC for the first time in Bengal, where even Saokat Molla became an MLA.

What Happened to the Messi Mess and the Loyalty?

To truly understand the bitterness of this fight, we must look backward. This is the exact same Arup Biswas who was heavily protected by Mamata Banerjee’s custom-made “show-off” investigation committee during the infamous Lionel Messi event chaos at Salt Lake Stadium.

When the international event turned into a nightmare of security breaches and black-market ticket extortion, a scapegoat was desperately needed. The poor event promoter, Shatadru Dutta, was thrown under the bus. Dutta had to suffer in jail for 37 grueling days on charges of mismanagement.

Meanwhile, Biswas, who was the Sports Minister at the time, remained completely untouched by the administration despite heavy allegations. What changed so suddenly? The absolute lack of gratitude.

The moment the election was lost, the party stripped Biswas of his treasury keys on June 5, throwing his loyalty into the trash.

The Arup Biswas move proves that in politics, yesterday’s protected ally can instantly become tomorrow’s ultimate destroyer.

Arup Biswas Growth Timeline in TMC

Phase	Period	Key Role / Event	Impact
Early Political Base	Pre-2011	Grassroots organiser in Tollygunge	Built strong local cadre network
Electoral Entry	2011	First major win as MLA (Tollygunge)	Emerged as key Kolkata face of TMC
Consolidation	2011-2016	Re-elected MLA; rising influence	Strengthened voter base & loyalty
Ministerial Rise	2016-2021	Minister (Youth Affairs, Sports, Housing) under Mamata Banerjee	Gained administrative power
Peak Influence	2021-2024	Senior leader in govt & organisation	Core decision-making circle
Current Phase	2025-2026	Controversies & TMC split speculation	Questions over political alignment

Can the Calcutta High Court Save the Mamata Camp?

The Mamata Banerjee camp tried desperately to find a legal shield. They rushed to the judiciary, hoping for an immediate lifeline to block the rebel momentum and regain control over their falling empire.

However, the legal route has brought nothing but more misery. As detailed in the comprehensive legal tracking on Anandabazar Online, the Calcutta High Court refused to give any interim order in the high-stakes Leader of the Opposition case.

The Court’s Stance: The judiciary chose not to interfere or grant immediate relief against Ritabrata Banerjee’s recognition as the Leader of the Opposition.

This absolute legal failure means:

1. The breakaway rebel group retains full legislative legitimacy.
2. Mamata Banerjee cannot use judicial orders to scare or stop the dissidents.
3. The central leadership remains completely exposed on both the legal and financial fronts.

The Verdict: Is This the End of an Era for Kalighat?

For a deeper dive into how changing political undercurrents shape public perception during party crises, independent analytical portals like Knowledge Mart note that a party without access to its funds cannot sustain local operations for long. Political machinery runs on logistics, and logistics require liquid cash.

The Arup Biswas move is a calculated, cold-blooded checkmate. By combining an unyielding internal rebellion, a silent and confused new cashier, a devastating refusal of relief from the Calcutta High Court, and a total freeze on Rs. 675 crore, the walls are closing in on Kalighat.

Mamata Banerjee is facing the fight of her life, and this time, the enemy has the keys to the safe.

Shocking Highlights: 10 Critical Realities Facing Mamata’s Camp

1. Rs. 675 Crore Frozen Instantly: The sudden Arup Biswas move to freeze principal party accounts has completely blocked access to a staggering Rs. 675 crore in dynamic assets, paralyzing Kalighat’s operations.
2. The Ultimate Insider Strike: This devastating financial attack did not come from external opposition forces; it was executed directly by the long-serving national treasurer of the party.
3. Massive Legislative Collapse: The freeze lands as an internal civil war tears the party apart, with 58 rebel MLAs in the state assembly and 20 rebel MPs in the Lok Sabha openly breaking ranks.
4. Ritabrata’s Coup Confirmed: Mamata Banerjee’s grip on power continues to shatter after the Calcutta High Court officially refused to grant an interim order to halt rebel leader Ritabrata Banerjee’s recognition as the Leader of the Opposition.
5. A Deeply Silent New Cashier: On June 5, 2026, the central camp quietly appointed Subhasish Chakraborty as the official treasurer to replace Biswas and contain the bleeding.
6. The Hidden Status Controversy: Compounding the panic, Subhasish Chakraborty curiously failed to state or clarify his status as an active office-bearer during high-profile CID raids on the faction.
7. The Bank Notification Mystery: Serious doubts remain over whether the central camp ever legally and officially informed the private bank regarding Chakraborty’s sudden appointment.
8. Screwing Mamata or Joining Rebels?: Political analysts at Knowledge Mart note that blocking liquid cash either serves as the ultimate personal revenge against Kalighat or functions as an aggressive peace offering to the rebel faction.
9. The Shocking End of Loyalty: This is the exact same Arup Biswas who was heavily protected by Mamata’s administration during the high-profile Messi event ticket extortion mess in Kolkata.
10. The Scapegoat Left in Jail: While Biswas was shielded by a custom committee during the stadium chaos, event promoter Shatadru Dutta was abandoned by the leadership and thrown into jail for 37 grueling days.