An empty Wealth Palace means that it has no major star. It does not mean no income. Read the opposite palace and the three-way structure, while keeping any minor stars and transformations in the Wealth Palace itself. Borrowing a star does not transfer every claim from the opposite palace.
For freelance work, trace quotation, contract, delivery, acceptance, and payment. The Career Palace frames what is delivered; contacts may come through the Friends Palace; the bank record establishes whether cash arrived. Compare natal and annual layers, then use invoices and agreements to test the interpretation.