Tax Deferral (for the seller): One of the most compelling reasons to consider an installment sale is the ability to defer capital gains tax.
Getting a Copy of the Contract Under TILA, the dealer is required to give the customer a copy of the contract to keep at the time the customer signs the retail installment sale contract whether you want to incur the debt on these terms.
Examples of installment buying would be a home, a car, or other large purchases that require financing, such as a laptop. It allows the purchaser to buy without paying the entire amount upfront.