Money laundering is the process of disguising illegally obtained money to make it appear legitimate. It involves three stages - placement, layering, and integration. Placement involves introducing illegal funds into the financial system. Layering involves moving and disguising the funds through transactions to hide their source. Integration makes the funds appear clean through investment or use. Money laundering damages markets, reduces tax revenue, and deters foreign investment while enabling criminal activities like drug trafficking and corruption. The Anti-Money Laundering Act of Bangladesh criminalizes money laundering and non-cooperation with investigations.