Calculators
Let us do the hard work
See how a few pounds saved each month could snowball into a substantial nest egg, or run the numbers to see what income you might expect in retirement.
Be sure to read the important information at the end so you know what assumptions are being made.
Compound Interest
Often considered to be the eighth wonder of the world, compound interest is when you earn interest on your savings and on the interest you've already earned.
This has a snowball effect over time where your returns build substantially because you are earning interest on a larger amount as each year passes.
Try our Compound Interest Calculator.
Compound Interest Calculator
Retirement Income
How do you know what income you might be able to rely on when you stop working?
Once you have an idea of how much capital you hope to have saved by your target retirement date, you now need to think about how it might grow in the future, and what rate of withdrawal is sustainable.
Try our Retirement Income Calculator.
Retirement Income Calculator
Monthly Savings
The habit of saving regularly can be enormously rewarding.
Little and often, you can build up your savings until you reach your goal - maybe an overseas adventure, a family car upgrade or a house deposit.
For younger members of your family in particular, by breaking down a big-ticket item into bite-sized targets demonstrates patience and the benefits of planning ahead.
Try our Monthly Savings Calculator.
Monthly Savings Calculator
| Month | Date | Contribution | Running total |
|---|
Mortgage Overpayment
Have you ever wondered how much interest you might save if you overpaid £100/month on your mortgage?
Or how many years you could shave off your mortgage term by paying an extra few hundred pounds each month?
Even small overpayments can bring debt-free living closer and free up future income for other goals.
Try our Mortgage Overpayment Calculator.
Montgomery Associates are not mortgage advisers. Read more.
Mortgage Overpayment Calculator
| Years | Payment | Interest | Principal* | Balance |
|---|
* Principal = the rounded portion of each payment that reduces the outstanding balance (excludes interest).
School Fees
Since January 2025 private and boarding school fees have been subject to VAT at 20%.
This has sharpened the focus of families, many of whom are exploring intergenerational gifting and making use of inheritance tax allowances.
Saving regularly, budgeting wisely and planning for inflation are more important than ever.
Try our School Fees Calculator.
School Fees Calculator
Projected annual fees
Schedule
| Academic Year | Children | Annual total |
|---|---|---|
| Total | £0 | |
Important information
The calculators shown on this page are beta versions only. The results and calculations are hypothetical and should be considered strictly as guidance. They do not constitute an offer or invitation to invest, nor should they be interpreted as advice or a recommendation.
Results are based on simplified assumptions (e.g. fixed rates, regular contributions) and do not account for fees, charges, taxation or inflation. All inputs on this page are anonymous, and no data is retained or stored either by us or third parties.
Whether an investment is appropriate depends on your personal circumstances and objectives. Montgomery Associates do not offer mortgage advice, so you should always seek advice from a mortgage broker or adviser who is suitably qualified.
If you are unsure or would like to clarify the calculations based on your circumstances, please contact us.
The value of an investment and any income from it can fall as well as rise, and you may not get back the amount originally invested. Past performance is not a guide to future performance.
