What it means
Think of a line of credit as a financial cushion for your business. Unlike a traditional term loan, where you receive a lump sum and start paying it back immediately, a line of credit gives you ongoing access to a pool of funds.
You can draw money when your bank account runs low and pay it back when cash comes in from your customers. This flexibility makes it ideal for smoothing out seasonal bumps in revenue or covering unexpected bills without having to reapply for a loan every time.
From a practical standpoint, the bank sets a maximum limit based on your creditworthiness and financial health. While the funds sit untouched, you usually pay nothing, though some lenders charge a small annual maintenance fee.
Interest charges only kick in the moment you withdraw money, and they stop as soon as you repay that portion. This contrasts sharply with standard loans, where interest accrues on the entire principal from day one.
For non-finance managers, understanding this tool is vital for working capital management. When sales dip or suppliers demand payment before your clients settle their invoices, a line of credit prevents cash flow crunches.
It acts as a bridge between paying your expenses and collecting your revenues, helping your business run smoothly without panic or costly emergency borrowing.
In practice
Real-world examples.
Example
An events entrepreneur secures a twenty thousand pound line of credit to pay venue deposits months before ticket sales arrive, drawing funds as needed and repaying them once the event wraps up.
Example
A boutique clothing retailer uses a fifty thousand pound credit line to buy winter stock in August, drawing down funds to pay suppliers and clearing the balance rapidly when holiday sales peak in December.
Example
A software agency establishes a ten thousand pound revolving credit limit to cover payroll during a brief two week gap between a major client project ending and the next contract starting.
Think of it
“A line of credit is like a bottle of water you keep in your backpack on a hike. You do not drink from it all at once, and you do not pay for the water until you take a sip. It is there just in case you get thirsty, and you only consume what you need.
Formula
Calculation
Available Credit = Total Credit Limit - Current Outstanding Balance. For example, if your business has a credit line of thirty thousand pounds and you have currently drawn ten thousand pounds to pay an urgent supplier invoice, your available credit is twenty thousand pounds (thirty thousand minus ten thousand). Interest is calculated daily on the drawn balance only: Daily Interest = (Drawn Balance x Annual Interest Rate) / 365.Case study
Seen in the real world.
Oakwood Landscaping, a growing firm run by Sarah, faced a classic cash flow puzzle every spring. Clients delayed paying invoices for up to sixty days, yet Sarah needed to buy seeds, fertilizer, and fuel immediately, plus pay her crew weekly wages. To bridge this gap, she arranged a twenty-five thousand pound line of credit with her high street bank.
In April, Oakwood drew twelve thousand pounds to purchase bulk supplies and meet payroll before any client payments landed. As customers settled their invoices through May and June, Sarah used those receipts to pay off the twelve thousand pound balance in full. Because she only borrowed money for six weeks, she paid a modest amount of interest rather than committing to a rigid twelve-month loan. This simple financial tool kept Oakwood operating smoothly during its busiest season without draining its cash reserves.
Watch out
Common mistakes.
- Treating the credit limit as free extra income rather than temporary borrowed money that must be repaid.
- Using short-term revolving credit lines to fund permanent long-term assets like buying a delivery van or office building.
- Ignoring the fees, such as annual maintenance charges or arrangement costs, which can quietly add up over time.
Questions
People also ask.
What is the difference between a line of credit and a term loan?
A term loan gives you a lump sum upfront and requires fixed monthly repayments of principal and interest. A line of credit lets you borrow, repay, and re-borrow as needed up to a limit, with interest only charged on the amount you currently use.
Do I pay interest if I do not use my line of credit?
Generally, no. You only pay interest on the specific amount of money you actually withdraw and keep outstanding. However, some lenders charge a small fee just to keep the facility open.
Is a line of credit secured or unsecured?
It can be either. Unsecured lines rely solely on your business credit history and financial strength, while secured lines require you to pledge business assets, such as unpaid invoices or equipment, as collateral.
From the founder's library
Take it further with the book.
Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.
25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.
View the book and save 25%Related