Hey IFC!

I was just wondering something about transitions altitudes. Ik the format to calculate it, it’s Airport Elevation + 2500 = ___ rounded up to the nearest 500.

Now, to get to the question, let’s say an airport is 20 ft MSL. If I use the format above the transition altitude should 3000, cause 20 + 2500 = 2520 (rounded up to the nearest 500) = 3000. However, is it worth rounding up 480 feet? Can’t the altitude be 2500?