A tax office is read as obligation and the feeling of owing something. Dream books take it as a sense of being audited — of having your efforts checked and a share asked for.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.