They rounded off their campaign with a 5-0 drubbing of last year’s title holders Young Africans.
Their victory was actually assured on Friday after their nearest rivals were beaten, putting Simba out of reach.
That match, between Azam and Mtibwa Sugar, was a replay, after a previous game was controversially abandoned, postponing Simba’s success.
Azam – who have a wealthy businessman, Salim Bhakresa, behind them, nonetheless take second place and will relish their chance of making maiden appearance in continental competitions.
Simba’s win over Young Africans was the biggest score-line in any match between the two sides for more than 30 years, and confirms Simba’s resurgence.
They are on the verge of reaching the knock-out round of the Confederation Cup after winning the first leg of their tie against Al Ahly Shandy 3-0 a week ago.
The team will now represent Tanzania in next year’s Champions League as well as in the East and Central Africa Club championship, while Azam will play in the Confederation Cup.
Fans of Simba celebrated through the streets of Dar es Salaam as they finally made sure of the winning the title.