To die beyond your means is actually the opposite of to live beyond your means

To live beyond your means=spend more than you earn, that is, waste

to die beyond your means=to be frugal, even to the point of having no money to spend

Oscar Wilde lamented before he died that he was going to die poor in the end

Note: Oscar Wilde lived in a shabby hotel for the last year before his death. He died penniless and before his rent was paid. If you read his story, you will understand the meaning of his words