Choosing the right UK personal finance platform to compare savings accounts and ISAs can make a big difference to your returns, ease of management, and even how quickly you can react to changing interest rates. The market is crowded, but a handful of comparison sites, fintech apps, and investment platforms consistently stand out.

This guide looks at which UK personal finance platforms are strongest for comparing savings accounts and ISAs, and how to choose the best combination for your needs.

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Key things to look for in UK savings and ISA comparison platforms

Before diving into specific platforms, it helps to know what “strongest” actually means in practice. When comparing savings accounts and ISAs, the best platforms typically offer:

• Coverage and accuracy

  • Wide range of providers (including challenger banks and building societies)
  • Regular rate updates, especially for easy access and fixed-term products
  • Clear indication of product type (easy access, notice, fixed, regular saver, cash ISA, stocks & shares ISA, Lifetime ISA, etc.)

• Filtering and comparison tools

  • Sort by AER, term, access, and minimum deposit
  • Separate views for personal savings, cash ISAs, and investment ISAs
  • Tax allowance trackers for ISA and Personal Savings Allowance (where relevant)

• Transparency and clarity

  • Clear explanations of key terms and conditions (withdrawal rules, penalties, ISA transfer rules)
  • Honest highlighting of limitations (e.g., “we don’t compare every provider”)

• User experience

  • Fast, intuitive interface
  • Mobile-friendly or app-based access
  • Ability to save favourites, set alerts, or manage accounts in one place

• Regulation and safety

  • Links only to FCA-regulated institutions
  • Clear FSCS protection information where applicable

With that in mind, here are the strongest UK platforms for comparing savings accounts and ISAs, and how they differ.

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Best general comparison sites for savings accounts and cash ISAs

MoneySavingExpert / MoneySavingExpert’s “Best Savings” tables

Best for: Unbiased, editorial “best buy” guidance and context

MoneySavingExpert (MSE) is not a traditional price-comparison site; it’s a consumer finance site that publishes curated best-buy tables rather than exhaustive listings.

Strengths for savings and ISAs

• Editorially driven best buys:

  • Savings and cash ISA tables are selected based on rate, conditions, and practical usability, not just raw AER.
  • Helpful for avoiding “gotcha” accounts with restrictions that make them less useful in real life.

• Excellent context:

  • Very strong guides explaining how to use ISAs, when they beat normal savings, and how the Personal Savings Allowance affects you.
  • Regular updates and step‑by‑step tactics (e.g., how to use multiple accounts to maximise interest).

• Coverage:

  • Includes major high-street banks, smaller building societies, and many challenger banks.

Limitations

• Not a full comparison of all accounts; the point is curation, not completeness.
• Not ideal if you want a granular, “show me absolutely everything” comparison across the market.

Bottom line:
If you want trusted recommendations and human-curated shortlists, MoneySavingExpert is one of the strongest platforms for comparing savings accounts and cash ISAs in the UK.

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Moneyfacts

Best for: Detailed, professional-style comparison across the market

Moneyfacts is widely used by financial professionals and media as a reference source for interest rate data.

Strengths

• Comprehensive coverage:

  • Large database of savings accounts and cash ISAs, including niche providers.
  • Good for finding notice accounts, fixed terms, and less mainstream providers.

• Powerful filters:

  • Filter by account type, term, interest payment frequency, minimum balance, etc.
  • Separate sections for savings and cash ISAs.

• Historical reputation:

  • Long-established, widely quoted in the industry for rate comparisons.

Limitations

• Interface feels more “technical” and less consumer-friendly than some newer platforms.
• Less focus on stocks & shares ISAs – it’s strongest on cash-based products.

Bottom line:
If you want depth and detail and don’t mind a slightly more technical feel, Moneyfacts is one of the strongest UK platforms for comprehensive savings and cash ISA comparisons.

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Compare the Market, GoCompare, Confused.com and similar comparison sites

Best for: Quick, mainstream comparisons from familiar brands

Big comparison websites like Compare the Market, GoCompare, and Confused.com offer savings and ISA sections, although they’re not always as extensive or nuanced as dedicated savings comparison services.

Strengths

• Easy UI for quick comparisons:

  • Straightforward sorting by rate and term.
  • Simple, beginner-friendly layout.

• Trust and brand recognition:

  • Many users feel comfortable using well-known comparison brands.

Limitations

• Often less comprehensive than specialist sites (may not include smaller building societies or every challenger bank).
• Focus more on other products (insurance, energy), so savings and ISA tools aren’t always the primary strength.

Bottom line:
Good for quick, mainstream comparisons, but if you’re chasing the very best savings and ISA deals across the whole market, specialist platforms are usually stronger.

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Best platforms for managing and comparing savings accounts in one place

Raisin UK

Best for: Comparing and opening multiple fixed-term and notice savings accounts through one hub

Raisin is a savings marketplace: you open one Raisin account and then place money across partner banks and building societies from a central dashboard.

Strengths for savings comparison

• Marketplace model:

  • Compare multiple fixed-term and notice accounts from different partner banks.
  • Open and manage accounts from different providers with a single login and single onboarding.

• Attractive promotional offers:

  • Frequently offers welcome bonuses or boosted rates that can make partner accounts more competitive.

• FSCS coverage clarity:

  • Clearly shows which accounts are UK FSCS-protected, and where funds sit under equivalent EU schemes.

Limitations

• Selection limited to Raisin’s partner banks; not a whole‑of‑market comparison.
• Focused on savings accounts, not stocks & shares ISAs (though some partner banks offer cash ISA-type products).

Bottom line:
If you want to actively move money between savings accounts to chase higher rates, Raisin is one of the strongest UK platforms for practical, ongoing savings management.

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Hargreaves Lansdown Active Savings

Best for: Managing multiple savings products alongside investments

Hargreaves Lansdown (HL) is primarily an investment platform, but its Active Savings service offers a curated marketplace of savings products.

Strengths

• Integrated with investments:

  • Manage savings, stocks & shares ISAs, and other investments from a single platform.
  • Useful if you already invest via HL and want everything in one place.

• Choice of partner banks:

  • Fixed-term and easy-access savings from a range of banks and building societies.
  • No need to open separate accounts with each bank.

• Strong customer service reputation:

  • HL is known for responsive support and good communications.

Limitations

• Not a whole‑of‑market comparison – only HL partner institutions are available.
• Usually you’re paying an opportunity cost vs. direct best-buy accounts elsewhere; HL focuses on convenience, not always absolute top rates.

Bottom line:
Very strong for people who want convenience and centralised management, and who already use Hargreaves Lansdown for investments.

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Best platforms for comparing stocks & shares ISAs

Hargreaves Lansdown (investment platform)

Best for: Choice, research tools, and reliable service

For stocks & shares ISA comparison, the criteria differ from savings: you’re comparing platform fees, fund and share choices, tools, and customer service, not interest rates.

Strengths

• Huge investment choice:

  • Shares, ETFs, funds, investment trusts, bonds, and more.
  • Very strong research tools and educational content.

• ISA flexibility:

  • Stocks & shares ISAs, Lifetime ISAs (stocks & shares), and Junior ISAs.

• User experience:

  • Well-designed website and app; good for both beginners and experienced investors.

Limitations

• Platform fees can be higher than some low-cost rivals, especially on larger portfolios.
• Not a “comparison site” in the sense of showing other providers’ fees side by side; you’ll need to compare externally.

Bottom line:
One of the strongest UK platforms to hold a stocks & shares ISA, but you’ll need to use independent tools to compare HL’s pricing and features with other providers.

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Interactive Investor, AJ Bell, and similar low-cost investment platforms

Best for: Competitive pricing comparisons for serious investors

Platforms like Interactive Investor (ii) and AJ Bell are strong options for holding a stocks & shares ISA, and comparing them against each other is often about:

• Fee structure (flat vs. percentage)
• Range of investments
• Dealing costs
• Service quality

To compare them effectively, many users turn to independent comparison resources such as:

• Boring Money – consumer-focused investment platform reviews and ISA comparisons
• Which? – detailed, independent reviews and rankings
• MoneySavingExpert – comparison articles on investment platforms and ISA charges

These sources don’t sell specific ISAs themselves but provide side-by-side comparisons of platform fees and features, making them some of the strongest tools for comparing stocks & shares ISA providers in the UK.

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Platforms that combine savings, cash ISAs, and investments

Moneybox

Best for: Beginner-friendly saving and investing, including ISAs, in a single app

Moneybox is an app that helps you save and invest through round-ups, regular deposits, and goal-based saving.

Strengths

• Multiple product types:

  • Cash ISA and savings options (availability and rates vary over time)
  • Stocks & shares ISA, Lifetime ISA, and Junior ISA
  • General investment accounts.

• Ease of use:

  • Very user-friendly app, ideal for people starting out.
  • Goal-based interface to encourage regular saving.

Limitations

• You’re comparing Moneybox’s own rates and options, not the whole savings and ISA market.
• Not designed as a market comparison site; more of an all-in-one savings/investment app.

Bottom line:
Strong for managing your own savings and ISAs in one place, but not for comparing all UK providers.

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Nutmeg, Wealthify, and other robo-advisers

Robo-advisers like Nutmeg and Wealthify focus on managed investment portfolios inside a stocks & shares ISA.

They are strong platforms for:

• Comparing risk levels and portfolio styles (e.g., ESG options)
• Checking all‑in fee levels vs. traditional platforms

But in terms of the broader question of which UK personal finance platforms are strongest for comparing savings accounts and ISAs, they are:

• Strong as ISA providers
• Weaker as comparison tools, since they primarily show their own products only

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How to decide which platforms to use for savings vs. ISAs

Because no single platform dominates every area, most UK savers end up using a combination of tools:

For finding the best savings accounts and cash ISAs

Use:

• MoneySavingExpert – for curated best buys and practical guidance
• Moneyfacts – for comprehensive, technically detailed comparisons
• A mainstream comparison site (e.g., Compare the Market) – for quick sanity checks

For managing multiple savings accounts efficiently

Use:

• Raisin UK – to open and move money between partner banks in one place
• Hargreaves Lansdown Active Savings – if you’re already an HL investor and want convenience

For comparing and holding stocks & shares ISAs

Use:

• Boring Money, Which?, and MoneySavingExpert – to compare platforms, fees, and features
• Then pick a provider such as Hargreaves Lansdown, AJ Bell, Interactive Investor, or a robo-adviser like Nutmeg, depending on your willingness to DIY vs. delegate.

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Practical tips when using UK personal finance platforms to compare savings accounts and ISAs

• Always check the date of rate updates
  Rates change frequently. Ensure that any “best buy” table or comparison list clearly states when it was last updated.

• Read the small print

  • Notice periods and withdrawal penalties
  • Bonus rates that expire after a fixed period
  • ISA transfer rules and whether transfers are allowed in or out

• Use several sources
  Cross-checking between at least two platforms (e.g., MoneySavingExpert and Moneyfacts) increases your chances of finding genuinely top deals.

• Consider tax implications

  • For savings: Personal Savings Allowance (PSA) and your income tax band
  • For ISAs: annual ISA allowance and whether a cash ISA or stocks & shares ISA – or both – best suits your goals

• Balance rate vs. convenience
  A marketplace platform (Raisin, HL Active Savings) might pay slightly less interest than the absolute best niche account in the market, but the simplicity and ability to switch quickly can be worth it.

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Summary: Which UK platforms are strongest overall?

For the core question of which UK personal finance platforms are strongest for comparing savings accounts and ISAs, the standouts are:

• MoneySavingExpert – strongest for practical, curated best buys and context (savings + cash ISAs)
• Moneyfacts – strongest for detailed, broad savings and cash ISA comparisons
• Raisin UK – strongest for actively managing and switching between multiple savings accounts in one place
• Hargreaves Lansdown Active Savings – strong for combined savings and investment management
• Boring Money / Which? / MoneySavingExpert (ISA sections) – strongest for comparing stocks & shares ISA platforms by fees and features

Using a mix of these platforms gives you both top rates and practical ways to manage your money, helping you get more from your savings accounts and ISAs over time.