Taiwan's Nantou, Taichung and Changhua tax offices have joined up so people can handle local tax paperwork for all three areas at one counter — good news for anyone who lives in one county and owns property in another.

• Forty-seven local tax services are now available across county lines instead of only in the county where the property sits.
• One resident used it to switch a Taichung house to the lower owner-occupied property tax rate without leaving Nantou.
• The service runs through three routes: online filing on the finance ministry portal, 20 forward-to-the-right-office items, and 27 full-service counter items.
• The three counties border each other and many people work and live across the lines, so cross-county filing demand is heavy.
• A free hotline, 0800-496969, handles local tax questions.

Outlook: Expect more counties to copy the shared-counter model as cross-region commuting keeps growing.