Mercury in the 2nd house (Dhana, the house of wealth) brings the significations of Mercury, namely intellect & analysis, communication & speech, business & trade, into the area of wealth, family, speech and the resources you gather. The 2nd house governs accumulated wealth, family, speech, food & values.
Results of Mercury in the 2nd House
Mercury is a neutral planet, so here it tends to bring poor communication, indecision, nervousness and trouble in studies or trade focused on wealth, family, speech and the resources you gather.The exact result depends on which sign Mercury occupies here and the aspects it receives.
When It Activates
These results typically surface during the Vimshottari mahadasha or antardasha of Mercury, and when transiting planets trigger the 2nd house. A well-placed Mercury here supports financial stability, a supportive family and pleasant, truthful speech; when afflicted it can indicate money troubles, family friction and harsh or careless speech.