Tindall's England career appears to be over following his behaviour during the recent World Cup campaign in New Zealand, which has resulted in him being kicked out of England's elite squad and fined.
The Rugby Players' Association, though, has confirmed Tindall will appeal what it describes as "an extraordinary fine".
The RPA said: "The Rugby Players' Association has today noted the extraordinary fine handed down to Mike Tindall following the disciplinary process after the Rugby World Cup.
"Mike will be appealing this unprecedented fine as per the terms of the EPS agreement. There will be no further comment from Mike Tindall or the RPA at this time."
Tindall has been punished following events at a bar in Queenstown during England's recent failed World Cup sojourn, when they made a quarter-final exit and were damaged by off-field issues.
Tindall, 33, was captured on CCTV footage from the Altitude Bar in conversation with a woman.
He later later issued an apology for misleading the England management over his movements that night, having initially claimed he did not go on to another bar.
Tindall received a stinging rebuke from senior RFU figure and former England fly-half Rob Andrew, who conducted Twickenham's investigation along with RFU legal and governance director Karena Vleck.
Gloucester centre Tindall has captained his country, won 75 caps and featured in England's 2003 World Cup final-winning team during an 11-year stint on the Test match stage.
"Mike Tindall's actions reached a level of misconduct that was unacceptable in a senior England player and amounted to a very serious breach of the EPS (elite player squad) code of conduct," Andrew said.
"While we acknowledge his previous good character, it needs to be made clear that what he did will not be tolerated."
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