Principality Building Society Mortgage Rates 2026: Deals & Remortgage
Principality Building Society mortgage rates in 2026 are not one percentage that applies to every borrower. The deal you can actually get depends on your loan-to-value (LTV), whether you are buying or remortgaging, the length of the fixed period, product fee, loan size, property and whether you already have a Principality mortgage.
This guide focuses on the numbers and decisions that matter: how to check today’s Principality mortgage deals, what its current 6.80% Standard Variable Rate means, how remortgaging works, when an existing customer can switch, and why a slightly higher rate with a lower fee can sometimes deserve a closer look.
Meaningful editorial review: 21 September 2026. Principality’s official intermediary mortgage hub currently lists a new-business mortgage range dated 10 September 2026 and an existing-customer retention range dated 2 September 2026. Mortgage products can be repriced or withdrawn without this page changing immediately, so check the live consumer mortgage finder before applying.
Principality Mortgage Rates 2026: Quick Answers
Principality Mortgage Rates: September 2026 Snapshot
Principality’s current mortgage range changes by LTV and borrower type, so publishing one large static table can become misleading quickly. The safest approach is to treat any percentage shown here as a dated example and use the official mortgage finder for the deal available when you apply.
Official live ratesCompare Principality Mortgage Rates and Deals
After opening this link:
- Enter your property value and the amount you want to borrow if the mortgage finder requests them.
- Select whether you are buying, moving, remortgaging or using another eligible mortgage route.
- Check the maximum LTV for each displayed product.
- Compare the initial rate and fixed period.
- Check the product fee, cashback and valuation or legal-fee incentives.
- Open the individual deal and read its Early Repayment Charges.
- Use the personalised illustration rather than relying on an old representative example or search-engine snippet.
How to Compare Principality Mortgage Deals Properly
A mortgage with the smallest percentage in bold is not automatically the cheapest mortgage for you. The borrowing amount and product fee can materially change the value of a deal, while cashback may partly offset other costs.
Principality Mortgage LTV Bands in 2026
Loan-to-value is the percentage of the property’s value you need to borrow. A lower LTV generally gives a lender more equity as security and can open access to different mortgage products or pricing.
Official LTV explanationPrincipality Loan-to-Value Guide
After opening this link:
- Find your expected property value.
- Subtract your deposit or current equity from the property value.
- Compare the borrowing amount with the property value to identify your LTV band.
- If you are close to a lower LTV threshold, check whether reducing the loan could open a different mortgage range.
- For a remortgage, use a realistic current property value rather than the price you paid years ago.
Remortgaging to Principality in 2026
Remortgaging means replacing your current mortgage with a mortgage from another lender. For a borrower moving to Principality, the real comparison is not simply your old interest rate versus a new Principality rate.
Include any Early Repayment Charge from your existing lender, product fee on the new deal, legal-cost arrangements, valuation, incentives and the payment you would make after the new introductory period.
Find the date your current fixed or introductory rate ends and any ERC that still applies.
Use the expected current property value and the amount still owed on your mortgage.
Compare initial rate, fee, incentives, term and ERC rather than filtering only by percentage.
A product appearing in a rate search does not guarantee the full mortgage application will be accepted.
Some Principality remortgage products may include help with basic legal fees when its chosen solicitor is used.
Check the personalised monthly payments, total costs, ERC and what happens when the initial deal finishes.
Official remortgage routeRemortgage to Principality Building Society
After opening this link:
- Choose the remortgage route rather than the existing-customer mortgage-switch route.
- Compare current products using your borrowing amount and estimated property value.
- Check whether your chosen product includes a free valuation or legal-fee assistance.
- Check your current lender’s redemption figure and ERC before deciding when to complete.
- Speak to Principality if your income, property or borrowing needs do not fit a straightforward online journey.
Existing Principality Mortgage Customers: Switching Your Deal
If your mortgage is already with Principality, you are normally looking for a product transfer or rate switch rather than a remortgage to Principality. That distinction matters because changing deal with the same lender can involve less paperwork than moving the mortgage elsewhere.
Existing borrowerManage or Switch an Existing Principality Mortgage
After opening this link:
- Find your current mortgage deal end date.
- Choose the switch-mortgage option if you only need a new rate.
- If you need to borrow more, change borrowers, move home or substantially alter the mortgage, use the matching route instead.
- Compare the available retention products by rate and fee.
- Check the date on which the new product would take effect.
- If you already selected a future rate and want to change it again before it starts, contact Principality directly.
Principality Mortgage Fees, Cashback and Remortgage Incentives
Product structure matters because Principality can offer both fee-free deals and deals with a fee. A borrower with a larger mortgage may judge the rate saving differently from somebody borrowing a much smaller amount.
A no-product-fee deal may appeal when
- You want to reduce upfront mortgage costs.
- Your mortgage balance is relatively modest.
- You do not want to add a product fee to the loan.
- The rate difference versus the fee-paying alternative is small.
- Cashback or legal-fee help improves the overall package.
A fee-paying deal may deserve comparison when
- The rate is materially lower.
- Your mortgage balance is large enough for the rate difference to matter more.
- You expect to retain the deal for the full introductory period.
- The total cost over your comparison period is lower after the fee.
- Adding the fee does not push you beyond the permitted LTV.
Principality Early Repayment Charges and Overpayments
An Early Repayment Charge can apply when you repay, switch or redeem more of a mortgage than the product allows during an ERC period. Always check the exact product because the percentage and dates are deal-specific.
Official overpayment guidancePrincipality Mortgage Overpayment Guide
After opening this link:
- Read the overpayment restriction before sending a lump sum.
- Check the balance Principality uses to calculate your annual 10% allowance.
- Check how much you have already overpaid during the current calendar year.
- If you want to pay substantially more, ask Principality whether an ERC would apply first.
- Use your correct mortgage account reference if making a permitted payment.
Who Can Get a Principality Mortgage?
A low rate is useful only if the mortgage fits your circumstances. Principality applies affordability, income, property and credit criteria as well as individual product rules.
Fixed Rate, Stepped Rate and SVR: What Happens After Your Deal?
Some current Principality fixed mortgage products do not simply jump straight from the initial fixed rate to SVR. The individual product page can show a stepped period before the mortgage eventually reaches the Society’s Standard Variable Rate.
Your mortgage interest rate is fixed for the product’s initial period, subject to the full mortgage terms.
Some current products show a temporary rate linked to the SVR after the fixed period ends.
If you do not move to another deal, the mortgage can eventually move to Principality’s SVR, currently 6.80%.
Moving Home With a Principality Mortgage
Existing Principality borrowers may be able to port an eligible mortgage to a new home. Porting means transferring the existing mortgage product, subject to a fresh assessment of the new property and your circumstances.
If you need to borrow more than the amount being ported, the additional borrowing may be arranged on a different product and rate. That can leave your mortgage split into more than one part with different deal-end dates.
Official porting guidePrincipality Mortgage Porting Guide
After opening this link:
- Check whether your current product is portable.
- Compare the outstanding mortgage with the amount you need for the new home.
- If borrowing more, ask which current product would apply to the additional borrowing.
- Check whether your new LTV meets Principality’s criteria.
- Do not assume porting is automatic; the new property and application still need to meet lending requirements.
Borrowing More on an Existing Principality Mortgage
Existing borrowers can ask about additional borrowing for purposes such as home improvements, urgent repairs or other qualifying needs. The extra borrowing is secured against the home and increases the amount that must be repaid.
Contact Principality Early if Mortgage Payments Are Becoming Difficult
Rate comparisons become secondary if you are struggling to make the next payment. Principality asks borrowers who are worried about repayments to contact its support team as soon as possible, including before a payment is missed.
Official payment supportPrincipality Mortgage Repayment Support
After opening this link:
- Download or review the mortgage budget planner if useful.
- Gather your realistic income and essential-spending figures.
- Contact Principality before cancelling your mortgage Direct Debit or ignoring correspondence.
- Explain whether the problem is temporary or expected to continue.
- Ask what support options could apply to your circumstances and what effect they may have on future payments or total interest.
Principality Mortgage Contact Numbers
Official contactPrincipality Contact and Mortgage Help
After opening this link:
- Find the mortgage section rather than using a savings or general online-profile route.
- Choose new mortgage, existing mortgage switch or payment difficulty according to your actual need.
- Check current telephone opening hours before calling.
- If you prefer face-to-face help, use the official branch finder.
- Do not include account passwords or sensitive security information in an ordinary online enquiry form.
Principality Branches and Mortgage Appointments
Principality has more than 60 branches and agencies across Wales and the borders. A branch can be useful if you prefer a face-to-face conversation, but check the location before travelling because opening hours and services can differ.
Official branch finderFind a Principality Branch or Agency
After opening this link:
- Search by your town, city or postcode.
- Open the individual branch or agency result.
- Check the location’s current opening hours.
- Confirm that it can help with the mortgage task you need.
- If you want a dedicated conversation, use Principality’s branch-appointment request process where appropriate.
Common Principality Mortgage Rate Mistakes
Principality May Be Worth Comparing When…
Principality may fit your shortlist if
- You are buying or remortgaging an eligible property in England or Wales.
- You want to compare fee-free and fee-paying mortgage options.
- You value access to mortgage advisers and a substantial Welsh branch network.
- You are a first-time buyer looking at higher-LTV borrowing.
- You are self-employed or have circumstances that may benefit from a lender with published specialist criteria.
- You are an existing Principality borrower approaching your deal end date.
Compare other lenders carefully if
- Another lender offers a lower total cost after all fees.
- Your property is outside England and Wales.
- Your circumstances fall outside Principality’s lending criteria.
- Your current lender offers a competitive retention deal with simpler switching.
- An ERC makes moving now uneconomical.
- You need a specialist mortgage type that is not available in the current Principality range.
Related Building Society Guides
Mortgage rates can move independently between building societies. Comparing similar LTV bands, fixed periods and fee structures gives a more useful comparison than checking headline percentages from unrelated products.
Official Principality Mortgage Resources Used for This Guide
Use the live source that controls your decision. Mortgage rates, product fees, cashback, LTV bands and lending criteria can change after publication.
How This Principality Mortgage Rates Guide Was Checked
Review date: 21 September 2026. The current product example is intentionally labelled as a dated snapshot. Do not treat any mortgage percentage on this independent page as a guaranteed rate or personalised mortgage quotation.
Independent Mortgage Information Notice
Building-society.org is an independent informational website. It is not Principality Building Society, a mortgage broker, the Financial Conduct Authority or the Prudential Regulation Authority.
This page cannot assess your affordability, recommend a mortgage for your personal circumstances, approve an application, switch your mortgage or access your Principality account. Use Principality’s official website or an appropriately authorised adviser when you need personalised mortgage advice.
Principality Building Society Mortgage Rates FAQs
1. What are Principality Building Society mortgage rates in 2026?
Principality does not have one mortgage rate for every borrower. Its rates vary by LTV, mortgage purpose, product type, fixed period, fee and eligibility. A current 90% LTV two-year fixed cashback product checked in September 2026 displayed a 6.25% initial rate, but products can be repriced or withdrawn, so use the live Principality mortgage finder before applying.
2. What is Principality Building Society’s current Standard Variable Rate?
Principality currently publishes a Standard Variable Rate of 6.80%. The SVR is variable and can change, so check the current product page or your mortgage documentation before relying on that figure.
3. Does Principality offer 95% LTV mortgages?
Principality’s current lending criteria allow qualifying first-time buyers to borrow up to 95% LTV. Individual mortgage products, affordability, income, credit history and property criteria still apply, so 95% LTV availability does not guarantee approval.
4. What is the maximum LTV for a Principality remortgage?
Principality’s current residential lending criteria state that qualifying residential remortgages can be considered up to 90% LTV. Lower LTV bands may have different rates and maximum loan sizes.
5. Does Principality pay legal fees when I remortgage?
Some Principality remortgage products include help with basic legal fees when you use the Society’s chosen solicitor. Additional legal work can create extra charges, so check the specific mortgage product rather than assuming every remortgage includes identical legal-fee assistance.
6. How early can an existing Principality customer switch mortgage deals?
Principality currently says existing customers can discuss or arrange a mortgage switch up to six months before their current deal ends. Check the existing-customer mortgage page for the current switching process and available retention deals.
7. How much can I overpay on a Principality mortgage without an Early Repayment Charge?
Principality’s current general guidance says many non-flexible residential mortgages allow overpayments of up to 10% of the outstanding balance calculated at 1 January each calendar year without an ERC. Your individual product terms control the exact allowance.
8. Does Principality lend only in Wales?
No. Although Principality is Wales’ largest building society and has a strong Welsh branch presence, its current residential lending criteria state that mortgages are available on eligible freehold and leasehold properties in England and Wales.
9. What number do I call about a new Principality mortgage?
Principality currently publishes 0330 333 4002 for new mortgage enquiries. For an existing mortgage or mortgage switch, the Society publishes 0330 333 4000. Customers worried about mortgage payments are directed to 0330 333 4020.
10. Is the lowest Principality mortgage rate automatically the best deal?
No. Compare the interest rate together with the product fee, cashback, valuation and legal-fee arrangements, APRC, Early Repayment Charges, LTV and what happens after the initial deal ends. The lowest headline percentage can cost more overall for some borrowing amounts and circumstances.