The phrase "are actually higher" is correct and usable in written English.
It can be used when discussing a comparison or stating that something is greater than expected or previously thought.
Example: "The results of the survey indicate that the costs are actually higher than we initially estimated."
Alternatives: "are indeed greater" or "are in fact elevated".
Now, though, rates are actually higher than when QE3 began.
Net corporate interest payments are actually higher than in the first quarter of 2000, when the stock market bubble burst.
If that happens, and it does, the risks of industry-wide disruptions are actually higher than they would be otherwise.
Just the contrary terrorist incidents are actually higher in countries that spend more on social welfare programs.
"For the first time since 2008 annual emissions are actually higher than the annual allowance cap, so 2014 may be the year that oversupply peaked.
As a result, commanders say, overall civilian casualty rates are actually higher now than they were before the plan was initiated.
As a final zinger, the embassy points out that consumption levels of marijuana are actually higher in the U.S. than in their mythical stoner's haven.
Beer supporters pointed to statistics that such deaths are actually higher in dry counties, where people have to drive farther for their alcohol.
Your article (3 November) highlights a recent study by a network of researchers which claims that multidrug-resistant TB (MDR-TB) rates in west Africa are actually higher than estimates published by the World Health Organisation.
Travel firm Tui said today that although bookings are actually higher, its profits have been hit as it has been forced to offer bargains to British holidaymakers to entice them abroad.
"That new products are coming on to the market that are actually higher in sugar than their predecessors, such as plain Weetabix, shows a failing by the government in tackling food companies".
