An installment loan is a very broad term that essentially includes any loan with a clear repayment schedule and number of payments (installments). Therefore, in this sense, a standard mortgage contract is also an installment loan.

A payday loan is a small short-term unsecured loan, usually issued by microfinance institutions. The issuance of such loans depends on the consumer's previous wages and employment history. Legislation on payday loans varies widely from state to state. To prevent usury (unreasonable and excessive interest rates), some jurisdictions limit the annual interest rate a lender can charge. Additionally, payday loans assume a higher rate of default on the loan.

A loan origination fee is a one-time payment, usually ranging from 0.5% to 1% of the total loan amount, charged by the lender to compensate the costs for processing the loan application. In general, loan origination fees are not required by all loan originating agencies. In fact, they can be even negotiated before you sign a contract. In most cases, however, the absence of a loan origination fee as a separate payment simply increases the interest rate correspondingly.

A secured loan is a loan that is secured by some assets. The asset is actually the security for the loan. Security is necessary because the amount in the case of a secured loan is usually high. The security helps the creditor to remain secured in the process of repaying the money owed. And that is why it is called a secured loan. Because of the fact that the creditor is secured, he or she may rest assured about the funds, even if the amount is huge. As a result, an interest rate for secured loans is much lower than for unsecured ones.

Of course, it very much depends on the country/state, the type of credit, your credit score, and whether the credit is secured or not. But in the broadest sense, for people with a credit score exceeding 600, an interest rate of 10-20% might be considered as good.

Principal debt is the money that the client receives directly from the lender to solve the tasks of the loan. It does not include interest, penalties in case of late repayment, other types of charges due to changes in the terms of the agreement. When the contract is signed, payment requirements are spelled out. Borrowers usually make monthly payments in equal installments. The fee includes the body of the loan, bank interest and other payments that are part of the principal amount owed to the bank.

Predatory lending is the practice of issuing loans with extremely high interest rates. Predatory lending methods include direct deception of borrowers, aggressive sales techniques, taking advantage of borrowers' financial unawareness, confusing contractual terms, and so on. In some countries, predatory lending is illegal.

A monthly payment consists of a payment of principal and accrued interest. The principal to interest ratio may vary. If a borrower is delinquent, penalties and late payment charges may be added to the payment. There are two ways to calculate a loan: annuity and differential. To calculate the approximate amount of the payment before the loan is taken out, all you need to know is the loan amount, the interest rate and the term of the loan. It is important to consider that in fact the loan may include a number of other payments, such as for insurance or informing about the transactions. This will be specified in the loan agreement. And in general to calculate the monthly payment you can always use a loan calculator.

Loan origination fee is an upfront fee associated with opening an account with a bank, broker, or other processing entity in connection with obtaining a loan. It is usually a fixed amount, but sometimes the fee is spread over the term of the loan or integrated into the interest rate. It is worth adding that in some countries, loan fees are prohibited at the state level.

Credit is an economic contractual relationship in which one party receives money, goods or property from the other party, not prohibited by the relevant legislation, and promises to provide reimbursement (payment) or return the resources in the future. In fact, credit is the legal formulation of an economic obligation.

The Grad Plus (Graduate PLUS) loan is a type of Federal educational loan granted by the US Department of Education for the purposes of further training and professional development. The specifics of this loan are that it is issued directly by the U.S. government and involves a low fixed interest rate. In order to be able to apply for the Grad Plus loan, one must be a citizen or a permanent resident of the USA.