Assumption of Loan Requirement Letter for disaster loan servicing action request packages. About this document and download.Assumption of SBA Loan. Create an account in the MySBA Loan Portal (lending.sba. Gov) to monitor your loan status or to make payments. Proof of ongoing insurance on the collateral with the SBA named as mortgagee must be provided. Another option to sell a business with an SBA loan is for the buyer to assume the loan. SBA loans are fully assumable with SBA approval. What is an SBA loan? Who can apply for one?