SB 2903 increases the documentation requirements for guardians managing an estate. It amends the Estates Code to require guardians to submit additional financial records with their annual account filings, including complete bank or investment statements, receipts for all purchases and expenditures, invoices for all estate expenses (including debit card and ATM transactions), and bills of sale for any personal property sold during the reporting period. These requirements aim to improve financial oversight and transparency in guardianship estate management.