Quick answer
The principal is the amount of money you borrow and still owe on a loan, not counting interest. It starts as the loan amount on your contract and falls as repayments chip away at it. On many business loans it can be larger than the cash that lands in your account, because establishment fees may be added to it and prepaid interest may be deducted from the advance.
Key points
- Principal is the borrowed sum still owing, separate from the interest charged on it
- Capitalised fees increase the principal; prepaid interest reduces the cash you receive
- Interest on business borrowings is generally deductible; repaying principal isn't
- Extra repayments go to principal and cut the interest charged from then on
Strip a loan back to its bones and there are only two things in it: the money you borrowed and the price you pay for borrowing it. The principal is the first of those. It’s the sum you owe the lender before any interest, and every repayment you make is measured against how much of it is left.
Government guidance on business.gov.au describes it as the part of the original amount still owing, excluding interest. Simple enough in theory. In business lending, though, the principal is often not the same as the cash you walk away with, and that gap is where borrowers get caught out.
Why the principal can be bigger than the cash you receive
Two common features of business loans pull the principal and the cash apart.
- Capitalised fees. An establishment fee, legal costs or valuation fees are sometimes added to the loan rather than paid out of pocket. That makes the principal larger than the money advanced, and interest is then charged on the fees too.
- Prepaid or deducted interest. Short-term property-secured lenders often take interest for the whole term up front as prepaid interest. You owe the full principal but receive a smaller amount on settlement.
Neither is unusual or sinister. They do mean you should compare offers on the amount of usable cash and the total dollars repaid, not on the headline loan figure.
A worked example
A Toowoomba earthmoving contractor needs about $195k to cover an ATO debt and a machine repair, secured against an investment property for nine months.
| Line on the settlement statement | Amount |
|---|---|
| Principal on the contract | $210k |
| Establishment fee added to the loan | included in the $210k |
| Prepaid interest for the term, deducted | –$11k |
| Legal and valuation costs, deducted | –$4k |
| Cash paid to the borrower | $195k |
The owner repays $210k at the end of the term, plus any fees on exit, even though $195k was the useful money. Seeing that $15k gap in writing before signing is the whole point of reading the settlement statement. Our loan cost comparison calculator helps put competing offers on the same footing.
How principal comes down
With principal and interest repayments, every instalment pays that period’s interest first and the remainder reduces the principal. Early on, the interest share is larger, so the balance falls slowly; later it drops quickly. On an interest-only loan, the principal doesn’t move until the end of the interest-only period or a lump-sum payout.
Paying extra reduces the principal directly, which lowers the interest charged from that point. Before doing it, check for early repayment costs on fixed-term loans. If you’re unsure what your current structure is costing, ask us to look at it.
Principal, interest and tax
Interest on money borrowed to run a business is generally deductible, while repaying the principal is not, because you’re only handing back borrowed money. Where the loan bought equipment or a vehicle, the deduction usually comes through depreciation on the asset rather than the repayments. That’s why lenders’ annual statements split the two, and why your bookkeeper needs that split.
Other meanings you might hear
“Principal” also turns up outside loan maths. Your ABN record lists a principal place of business, and in contracts the principal is the party an agent acts for. In this glossary, it always means the borrowed balance.
Related terms
Amortisation, loan term, repayment schedule, early repayment and refinance.
Know the number you need?
Once you know how much usable cash the business needs, rather than a round loan figure, the right structure becomes much easier to find. Pop that figure into our enquiry form. It’s about a minute’s work, and no credit check is run because you asked. We keep what you send in-house instead of auctioning it off to a dozen funders, and an actual person on our team reads it before picking up the phone. Honest turnover and security figures mean the option we suggest on that first call should actually suit you.
Frequently asked questions
Is the principal the same as the loan amount?
At the start, usually yes, but not always the same as the cash you receive. If fees are added to the loan, the principal is higher than the money paid out. If interest is prepaid or fees are deducted at settlement, you receive less than the principal you owe.
Can I deduct principal repayments on a business loan?
Generally no. Interest and many borrowing costs on money used to earn business income are deductible, but repaying the principal is just returning borrowed money. For an asset bought with finance, you usually claim depreciation on the asset instead. Your accountant can confirm the treatment for your structure.
What happens if I pay extra off the principal?
The balance falls faster, so less interest is charged on it from that point. Check your contract first: some fixed-term loans charge break costs or early repayment fees, and some short-term loans charge a set amount of interest regardless of when you repay.
Do merchant cash advances have a principal?
Not in the usual sense. A merchant cash advance or factor-rate loan sets a fixed total payback amount up front, so there is no separate principal and interest split in the repayments. Whether paying early reduces the total depends on the provider's terms.
Where do I find my current principal balance?
On your loan statement or in the lender's online portal, often shown as the outstanding or current balance. For an exact figure to clear the loan, ask for a payout figure, which adds any accrued interest and exit fees.