Principal

Principal versus interest

When a lender advances £500,000, that £500,000 is the principal. Each repayment instalment is split between returning a portion of the principal and paying the interest that has accrued since the last payment. Early in an amortising loan, instalments are weighted more heavily toward interest; as the principal reduces, the interest component falls.

Understanding this split is important when comparing offers: two loans with the same headline rate but different amortisation profiles can result in very different total interest costs over the term.

Outstanding principal and early repayment

Outstanding principal is the balance still owed at any point in time. If a borrower wishes to repay early, the settlement figure is the outstanding principal plus any accrued but unpaid interest and, commonly, an early repayment charge (ERC). The ERC compensates the lender for lost future interest income.

Some facilities, particularly variable-rate products, carry lighter ERC terms than fixed-rate equivalents, reflecting the lender's reduced hedging cost. Always request a redemption statement before assuming what an early exit will cost. Any figures cited here are illustrative, not a quote.

Principal in interest-only lending

Not all business loans reduce the principal during the term. Interest-only facilities require the borrower to service only the interest each period, with the full principal due as a bullet repayment at maturity. This structure suits businesses that expect a large capital event — an asset sale or refinancing — at the end of the term.

The risk is that if the anticipated exit is delayed or falls through, the borrower faces a large lump sum with no partial reduction from earlier payments. Lenders typically require a credible exit strategy before approving an interest-only structure.