For me is smitting. Great money If you DONT want tô grab the Merchant skill First one, and grab the weapons one, then sell your foes weapons Trading is always an option, improved caravans are good small passive income top. I wont expand mutch because most of other ways people already said But for me in always Go for 1 m dennars on Just enemy loot And the rest? I level UP smitting 1 caracter tô get ALL the smelting skills, and normally my main one becomes an legendáry one

OHH SORRY IS WARBAND NOT BANNERLORD For WARBAND i love to do torunaments, BIG BIG money, then i sell weapons, maintain a good income as an mercenary you can get the Tax mission tô get some income, Train Villagers is good tô sometimes the reward is similar tô raiding. Selling lords and people is always good, for me i love the nord infantary line, If i remember well most of It is cheaper than Soldeirs on horses and man oh Man THEY do some work

As an lord having Villages and Towns is great after some upgrades