# Spontaneous Sources of Finance
Spontaneous sources arise naturally in the course of business operations — without the firm having to negotiate them formally each time. They grow and shrink automatically with the level of operations.
## Examples
- Trade credit
- Credit from employees (accrued wages)
- Credit from suppliers of services
## The Three Main Spontaneous Sources
### (i) Trade Credit
Credit extended by the seller/service provider to the purchaser. Contributes about one-third of total short-term financing requirements of a typical firm.
### (ii) Bills Payable
The purchaser gives a written promise to pay the amount of the bill/invoice either on demand or at a fixed future date to the seller or the bearer of the note. This is a formalised version of trade credit, evidenced by a negotiable instrument.
### (iii) Accrued Expenses
Services already availed by the firm for which payment is still pending — wages, salaries, taxes, duties, etc., typically paid at period-end. This is a built-in and automatic source of finance because there is always a gap between service consumption and payment.