overspend(an amount of extra money that is spent on something above the amount that should have been spent: " We're expecting to have a £5 million (budget) overspend this year. CALD Alexander Demidov)
overspending(Overspending is spending more money than one can afford. It is a common problem when easy credit is available. This can also be called "investing" in the public sector when infrastructure payments exceed actual calculated cost. WK Alexander Demidov)