Cash transactions over 10,000 lakh are illegal in India [1]. Spain, France and Greece have all recently introduced limits [2]. Germany [3] has tried to introduce similar limits but have failed (so far). Australia's introducing a limit soon [4].

[1] https://babatax.com/cash-transaction-limit-in-india-cash-pay...

[2] https://wolfstreet.com/2017/01/28/europe-limits-on-cash-tran...

[3] https://www.theguardian.com/world/2016/feb/08/german-plan-pr...

[4] https://www.accountantsdaily.com.au/business/14087-governmen...