Arlington County unexpectedly ended up $26 million in the black in fiscal 2007, county officials said this week, not long after predicting a $17 million budget shortfall for 2009.

“When we did our final reconciliation, it turns out there was a combination of additional revenue that we weren’t aware of in the spring and some savings related to lower-than-anticipated spending by some county departments,” said county Chief Financial Officer Mark Schwartz.