Why Comparison Sites Don't Work for Mortgages

Comparison sites show products. We secure approvals.

Comparison websites are designed for simple, textbook mortgage cases. If you are self-employed, have adverse credit, or complex income, comparison sites show products you may never be approved for. A whole-of-market adviser accesses specialist lenders, pre-underwrites your case, and protects your credit score before any application.

Comparison websites have their place for straightforward, "textbook" cases. But mortgages are rarely straightforward.

The moment your situation includes self-employment, company director income, past credit issues, or anything beyond the ordinary, comparison site results become unreliable - sometimes dangerously so.

They show products. They do not secure outcomes.

The 7 Problems with Comparison Sites

1. Limited Lender Access

Comparison sites only display lenders they have commercial partnerships with. That is not the whole market.

They exclude:

  • Building societies with manual underwriting
  • Specialist adverse credit lenders
  • Director and self-employed specialists
  • Lenders that only work through advisers

An adviser accesses:

  • High street lenders
  • Specialist lenders
  • Regional building societies
  • Niche underwriting solutions

2. They Assume a "Perfect" Borrower

Comparison engines work best if you have clean credit, simple PAYE income, and a straightforward deposit.

If you have CCJs, defaults, self-employed income, multiple income streams, or gifted deposits - the results become unreliable. You may be shown products you are not eligible for.

3. No Credit Protection

Applying through a comparison site can trigger unnecessary credit searches, lead to declined applications, and reduce your future acceptance chances.

An adviser pre-assesses your case before any application is submitted, protecting your credit profile.

4. Headline Rates Are Not Realistic Rates

The cheapest rates shown often apply only to perfect profiles, require higher deposits, exclude complex incomes, and disappear once full underwriting begins.

The best mortgage is not the cheapest advertised rate. It is the best rate you can actually be approved for.

5. No Underwriting Knowledge

Comparison sites do not understand how lenders treat adverse credit, which lenders manually assess cases, or how affordability differs by lender.

They cannot package your case, present your income properly, or match you to underwriting tolerance. That is where most approvals are won or lost. An adviser handles all of this.

6. No Accountability

Comparison site:

  • No adviser
  • No responsibility
  • No personalised advice
  • No FCA-regulated recommendation

With an adviser:

  • Named adviser
  • Regulated advice
  • Full compliance protection
  • Accountability

7. One Size Fits Nobody

Two borrowers earning the same amount can be offered completely different mortgages based on credit history detail, deposit source, employment structure, and stability of income.

Comparison sites treat everyone the same. Mortgage underwriting never does.

Comparison Site vs Mortgage Adviser

FeatureComparison SiteMortgage Adviser
Lender AccessCommercial partners onlyWhole of market including specialists
Credit ProtectionMultiple hard searches possiblePre-assessment before applications
Complex IncomeCannot assess properlyExpert packaging of self-employed/director income
Adverse CreditUsually excluded or wrong productsSpecialist lender matching
UnderwritingNo underwriting knowledgeCase pre-underwritten before submission
AccountabilityNo adviser, no responsibilityNamed FCA-regulated adviser

Consumer Duty: Why Comparison Sites Cannot Provide Regulated Advice

FCA Consumer Duty requires advisers to recommend products that are suitable to individual needs - not just show what's available on price alone.

Comparison sites cannot:

  • Confirm whether a mortgage is appropriate for your circumstances
  • Consider long-term affordability or risk
  • Conduct a fact-find or needs assessment
  • Fulfil FCA requirements for fair customer outcomes

A regulated adviser must:

  • Conduct a full fact-find
  • Assess your needs and objectives
  • Make and document a suitability-based recommendation
  • Explain why the recommendation meets your needs

Comparison sites show products. They do not meet Consumer Duty requirements for advice.

Not All Brokers Are Whole-of-Market

While brokers do give advice, not all brokers access the full mortgage market. Understanding this distinction matters.

Comparison SitesRestricted BrokersWhole-of-Market Adviser
Lender AccessPartners onlyLimited panel100+ lenders inc. specialists
Specialist LendersExcludedOften excludedFull access
PricingAlgorithm-basedPanel rates onlyMultiple sources compared
Complex CasesCannot handleLimited optionsSpecialist expertise
Advice QualityNoneRegulated but restrictedFull independent advice

Why Independent Pricing Matters

Many brokers use a single sourcing system or aggregated platform, which can mean higher loaded rates, fewer lender options, and one-size-fits-all results.

Being truly independent means assessing multiple sourcing platforms and direct lender panels to find mortgages you could not obtain through comparison sites - or restricted brokers.

Who Needs Adviser Help Most?

Self-Employed & Directors

Complex income requires specialist lender matching and proper case packaging

Adverse Credit History

CCJs, defaults, and missed payments need specialist lender expertise

Complex Deposits

Gifted deposits or unusual sources require proper documentation

Remortgaging

Existing mortgage terms and equity calculations need expert assessment

The Bottom Line

Comparison sites show

Options

We deliver

Approvals

They compare

Products

We build

Solutions

They assume

Eligibility

We confirm

It

Frequently Asked Questions

Why don't comparison sites work for self-employed mortgages?

Comparison sites assume standard PAYE income and cannot assess director dividends, retained profits, or complex income structures. They show products you may not be eligible for, leading to wasted applications and credit score damage.

Can comparison sites damage my credit score?

Yes. Applying through comparison sites can trigger hard credit searches. Multiple failed applications reduce your credit score and future acceptance chances. An adviser pre-assesses your case before any application is submitted.

Do comparison sites show the whole mortgage market?

No. They only display lenders they have commercial partnerships with. They exclude specialist adverse credit lenders, building societies with manual underwriting, and lenders that only work through advisers.

What's the difference between a comparison site and a mortgage adviser?

Comparison sites show automated product lists based on basic criteria. Advisers assess your full circumstances, access the whole market including specialist lenders, pre-underwrite your case, and secure approvals - not just quotes.

Do comparison sites meet Consumer Duty advice standards?

No. Comparison sites cannot provide regulated, suitable advice that meets FCA Consumer Duty requirements. They list products but do not assess your individual needs, conduct a fact-find, or recommend what is right for you.

Are all mortgage brokers whole-of-market?

No. Many brokers use restricted lender panels or a single sourcing platform. Only genuinely independent whole-of-market advisers search all available lenders including specialist and niche options not available through restricted panels.

Can restricted broker panels limit my mortgage options?

Yes. Restricted lender access can exclude lenders that would consider complex cases like adverse credit or self-employment, potentially leading to higher rates or fewer suitable mortgages than a whole-of-market adviser would find.

Does independent advice mean lower mortgage rates?

Not always lower headline rates, but often better-fit rates you can actually be accepted for. Independent advisers access lenders and terms that restricted brokers cannot, particularly important for complex or adverse situations.

Jay Sabine
CeMAP, CeRER
25 Years Experience

Content reviewed: January 2026

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