Scotland tenancy deposit: how quickly must a landlord protect it?

For most private tenancies in Scotland, the landlord must protect the deposit in an approved tenancy deposit scheme within 30 working days of the tenancy starting, unless an exemption applies. The landlord must also give the tenant prescribed information about the deposit and scheme. Official source: mygov.scot. Guide: https://getinstantlaw.com/uk/scotland/landlord-tenant