Comparing personal loans looks simple on the surface — just pick the lowest rate — but a handful of common mistakes lead borrowers to pick a loan that's more expensive than it first appears. Here's how to compare properly.

Mistake 1: Comparing headline rates instead of your personal rate

Most advertised personal loan rates are "representative," meaning only 51% of successful applicants need to actually receive that rate — yours could be higher depending on your credit profile. Always get a personalised, no-obligation quote (typically via a soft search that doesn't affect your credit score) before assuming an advertised rate applies to you.

Mistake 2: Ignoring total cost in favour of monthly payment

A longer loan term often produces a lower monthly payment, which can look more attractive at a glance — but frequently means paying significantly more in total interest over the life of the loan. Always compare the total amount repayable across the full term, not just the monthly figure.

Simple check: multiply the monthly payment by the number of months, and compare that total (plus any fees) across your shortlisted loans — this single calculation avoids most term-length comparison mistakes.

Mistake 3: Overlooking fees

Some loans carry arrangement fees or early repayment charges that aren't obvious from the headline rate. Check the full terms for any fees, and factor them into your total cost comparison rather than treating the interest rate as the whole story.

Mistake 4: Applying to multiple lenders directly

Each full application typically triggers a hard credit search, and applying to several lenders in a short window can temporarily lower your credit score and look like financial distress. Use eligibility checkers (based on soft searches) to compare likely offers before submitting a full application to your preferred choice.

Mistake 5: Not checking for secured vs unsecured

Some loan comparisons mix secured and unsecured products, which carry very different risk profiles — a secured loan uses an asset (commonly your home) as security, putting it at risk if you can't repay, while an unsecured loan doesn't. See our comparison of personal vs secured loans before assuming a lower secured rate is automatically the better deal.

A practical comparison checklist

  1. Get personalised quotes via soft-search eligibility checkers from at least three lenders
  2. Compare total cost (monthly payment × term, plus fees), not just the headline rate
  3. Check for early repayment charges if you might want to clear the loan early
  4. Confirm whether each option is secured or unsecured before comparing rates directly
  5. Model the numbers with our True Cost of Borrowing Calculator

The bottom line

Properly comparing personal loans means looking past the headline rate to your personalised rate, the total cost over the full term, and any fees involved — a little extra diligence up front can meaningfully reduce what you end up paying overall.

This article is for general information only and does not constitute financial, legal or tax advice. Rates, thresholds and eligibility criteria change over time — always check current terms with the lender or an FCA-regulated adviser before making a decision. See our full terms and disclaimer.