This is a C Corp and doing financials on accrual basis:

In 2010 we've paid $50K in Business Income Tax for period 2010. How should we book this?

a) In 2011 P&L as Tax Expenses, or

b) Make an accrual in P&L Dec2010 for $50K and the 2011 payment just will offset the accrual.

thanks in advance, GERRY