LoanCalc Lab

Editorial policy and standards

Published · Updated

LoanCalc Lab, published by Rodway Labs, keeps a small set of personal-loan and debt-payoff tools and the guides that explain the same maths. We would rather have fewer pages with worked EXAMPLE figures than a large pile of thin posts. The editorial voice is calm UK English. Site-facing pages do not carry a personal name, a photograph, or an employer.

What we publish

Calculators come first: monthly payment, amortisation, extra payments, consolidation break-even, refinance break-even, fee-adjusted cost, and snowball versus avalanche. Guides and glossary entries exist to explain those tools, not to chase unrelated lending keywords. A new page has to teach something a reader can check against the calculator, such as how a fee changes total interest or how to read a schedule.

Shared illustrations keep the numbers honest across the site. EXAMPLE Loan A is £8,500 at a 24.9% EXAMPLE rate over 48 months with no fee. EXAMPLE Loan B is £12,000 at a 16.9% EXAMPLE rate over 60 months with a £195 fee. They are teaching figures. They are always labelled EXAMPLE. They are not offers.

Sources and what we will not claim

Where a page states a UK product norm or a consumer-credit concept, we point at a primary reference such as MoneyHelper or FCA material, and we say what that source is being used for. Calculator outputs are illustrations from the disclosed monthly formulae. They are not copies of a named lender’s schedule and not a scrape of a comparison site.

We do not claim FCA authorisation. We do not present the site as a lender, a broker, or a debt-advice agency. Country modes are currency and labelling switches. They are not a promise that foreign lending law has been reviewed. Flat-rate loans stay out of scope rather than being forced into a reducing-balance formula.

Who writes and checks

Pages are written and checked by Rodway Labs. Pages show their dates (last checked, or published and last updated) rather than a byline. We do not publish individual names, photographs or job titles, and we do not invent credentials. Instead, this page sets out exactly how the work is done, so you can judge it on the method rather than on a biography. We are not a regulated financial adviser, lender or broker, and nothing here is advice.

Review process

  1. Draft. A page starts from a calculator we actually ship. The draft names its inputs, its assumptions and what the tool leaves out.
  2. Figures. Every EXAMPLE figure in the text, including each case study, is produced by running the calculator’s own code with the stated inputs. Figures are not typed in from memory or copied from another site.
  3. Second check. A second pass re-enters the same inputs in the live calculator and compares the result with the text, and checks each UK rule or norm against the primary source linked beside it.
  4. Links. External links are opened before publishing and on each review, and replaced if the page has moved or closed.
  5. Publish and date. The page goes live with a last-checked date. The date moves only when the substance has been checked again.

How formulas are verified

Each calculator page has a “How this is calculated” section that describes the code step by step, in plain English, and an “Equations & assumptions” panel with the formula itself. The maths runs in your browser; nothing is sent to us.

  • An automated check runs the calculator code before each release. It confirms that the monthly payment repays the loan exactly (the present value of the payments equals the amount borrowed), that every schedule ends at a zero balance, that the principal repaid adds up to the amount borrowed, that a 0% loan is split evenly, and that the fee-adjusted rate solves its own equation.
  • The same check re-runs every published case study and fails if any figure on the page differs from the code by more than a penny or so of rounding.
  • We do not change a formula to make an example look better. If a formula changes, the methodology text, the case studies and the dates change with it.

Primary sources we use

  • legislation.gov.uk for UK law, such as the Consumer Credit Act 1974 and the Consumer Credit (Early Settlement) Regulations 2004.
  • The FCA Handbook (CONC) for consumer-credit rules.
  • The Bank of England for Bank Rate and average quoted loan and card rates.
  • GOV.UK for tax-year figures such as the ISA allowance.
  • Experian, Equifax and TransUnion for how credit files work.
  • MoneyHelper for free, impartial guidance.

Each cited figure carries the date we last checked it. We do not use comparison sites, lender marketing or forums as sources for rules or norms.

Updates and “last checked” dates

Core tools and rate-assumption notes are reviewed when the underlying rules or our formulae change, when a cited rule or source changes, and at least annually. Guides that rely on a UK product norm carry a last-checked date. Other pages show a published date and an updated date. The shared content-as-of marker for the tools is 2026-10-24. A date changes when the substance changes, not merely when a comma moves.

Corrections and independence

Email hello@loancalclab.net with the URL and what is wrong. There is no form, and we only use your email to reply. Material errors are corrected on the page. We do not keep a public list of every typo, but a change that affects a result or a cited norm is visible because the date moves.

We also skip topics we cannot show with the tools we actually ship. A page about a lender’s current headline rate, a “best loan” ranking, or a credit-score promise would go stale or imply a comparison we do not run. If a subject needs a calculator we do not have, we do not fake it with a short definition and a keyword.

The site is funded by display advertising through Google AdSense, shown only if you accept advertising cookies. There are no affiliate links, no broker commissions or kickbacks, no paid placements and no lead-generation forms, and we never pass your details to a lender. We do not accept payment, free products or commission to alter calculator outputs, to hide an assumption, or to favour a lender in a guide. Advertising is disclosed separately in the advertising disclosure and does not change the maths. The limits of every result are restated in the calculator disclaimer.