I have this formula: 

IF(ISBLANK(AVTRRT__End_Date__c ), (AVTRRT__Start_Date__c <= TODAY()) , (AVTRRT__Start_Date__c <= TODAY() && AVTRRT__End_Date__c >= TODAY()))

But the problem is that any placement with a date in the future is not included.
How do I change the formula to get startdates in the futurealso included?