Callum Dunn
My name is Callum Dunn, and I created MyFinanceTools after more than a decade working in the finance industry with leading UK banks. During that time, I saw how often people are expected to make financial decisions without a clear view of the numbers behind them.
Borrowing, repayments, savings, mortgages and tax can all look simple at first glance, but the details matter. A small change in interest rate, repayment amount, term length or tax threshold can change the outcome significantly. MyFinanceTools was built to make those details easier to test and understand.
The site is not designed to push products or replace regulated advice. It is designed to give people a clearer starting point, so they can compare scenarios, understand assumptions and approach financial decisions with better questions.
Why MyFinanceTools was created
Personal finance information is widely available, but it is not always easy to apply. Many pages explain a concept, but leave the reader unsure what the numbers mean for their own situation. That gap is where MyFinanceTools is intended to help.
The aim is to turn common financial questions into practical calculations. How long could a credit card take to clear? Would a balance transfer save money after fees? What might a mortgage cost each month? How much tax or National Insurance could be deducted from income? How realistic is a savings goal?
Those questions do not need vague answers. They need clear estimates, sensible assumptions and plain explanations of what changes the result.
The goal of the website
The goal of MyFinanceTools is to help UK users understand financial decisions before they commit to them. A calculator cannot make a decision for someone, but it can make the trade-offs easier to see.
That is why the site combines calculators with supporting guides. The calculator shows the estimate. The guide explains the assumptions, the limitations and the checks that matter before relying on the result.
The best outcome is that a user leaves the page with a clearer understanding of the calculation, the risks of relying on assumptions, and the next practical step to check.
How content is approached
MyFinanceTools content is written to be practical, specific and easy to follow. Each page starts with a real financial question, then breaks down the figures that affect the answer.
Where a topic depends on UK rules, thresholds or assumptions, the content is written with those limits in mind. Estimates are explained as estimates, not guarantees. Where appropriate, users are encouraged to check official sources, lenders, providers or qualified advisers before making major decisions.
For more detail on the site’s editorial approach, use the editorial standards, editorial policy, and methodology pages.
Important limits
MyFinanceTools is for general education and estimation. It does not provide regulated financial advice, mortgage advice, tax advice, investment advice, debt advice, or a personal recommendation. Calculator results depend on the figures entered and the assumptions used on the page.
Before making an important financial decision, users should check details with the relevant lender, provider, HMRC, GOV.UK, MoneyHelper, the FCA, or a qualified adviser where appropriate. The purpose of the site is to help users prepare better questions and understand possible outcomes, not to replace professional advice.
Contact
If you have spotted an unclear explanation, outdated reference, broken link, or calculation issue, you can contact MyFinanceTools by email at contact@myfinancetools.co.uk. Please include the page URL and a short explanation of what needs checking.