Bismillah ir Rahman ar Raheem
You are charged 0.6% withholding tax on total withdrawals higher than Rs. 50,000/- per day (including checks/ATM etc., bank fees not counting towards this limit I believe) from any one account. Govt. was thinking in June to require banks to consolidate the tracking of withdrawal limits for all your accounts within each bank so that the limit would collectively apply to all accounts held at any one bank - don't know how far that went.
Scholars advise to have as little to do with the global 'riba' (usury) based economy, seek Allah's forgiveness for the rest, and to keep as much of your money in gold, property, business investments as possible. Also a good idea to split money between foreign and local currencies - restrictions on one don't put you in a bind when you are facing an emergency.
Hifz u kum Allah