Means Test

I'm building my eightieth pyramid
stone by stone 
dry mortar to make it stick
I'm at the immortal chamber
where  blood runs thick
if I take a second mortgage
it will ease the strain 
and grease the boards
so things will become smooth
I heard the Pharaoh's men
raised their interest rate
based on my initial calculations
 it's multiplied my fate
I shall die when it's completed
 a sacrifice to fake estate