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Cash interest explained

You will receive interest on balances in your platform cash account at the prevailing rate.

Embark Investment Services Limited acts as the custodian for investments on the Willis Owen platform and is one of our strategic partners that provides our Willis Owen ISA, GIA, Junior ISA and SIPP.

Embark places cash with a number of banking partners for safekeeping and to provide the potential for you to earn interest on money in your platform cash account. By managing cash in this way, it aims to provide better protection and a higher overall level of interest than if all funds were placed with a single bank.

The rates of interest paid by banks will vary. Embark retains a portion of the interest earned to cover its costs in managing platform cash.

Current Interest Rate

The table below shows the current customer interest rate payable on cash balances along with the amount of interest retained by Embark. The customer interest rate shown is that after accounting for interest retained by Embark:

Date From Customer Interest Rate Interest retained by Embark
12th June 2024 2.6% 1.75% - 2.00%

Embark can change the rate of interest at any time and it reviews the position at least quarterly. Interest is calculated and accrued daily and is credited to your account on the first of each month. If you transfer out, accrued interest is applied at the point of transfer. We will inform you if and when the interest rate changes as soon as is practicable.

Interest retained

The table below shows the yearly equivalent rates of interest Embark expects to pay based on a range of possible yearly interest rates it may earn.

Interest Embark expects to earn Customer Interest Rate Interest retained by Embark
0-1% 0 – 0.46% 0 – 0.54%
1-2% 0.46% – 0.94% 0.54% – 1.06%
2-3% 0.94% – 1.46% 1.06% – 1.54%
3-4% 1.46% – 2.02% 1.54% – 1.98%
4-5% 2.02% – 2.61% 1.98% – 2.39%
5%+ 2.61%+ 2.39%+

Historic Interest Rates

To see details of historic customer interest rates, along with the amount of interest retained by Embark, click here.

Financial jargon explained

Here you’ll find a simple explanation of some of the most commonly used investment terms. If there is any other financial jargon you want translated, please call our Customer Service Team free on 0800 597 2525 or email us at and they will be pleased to help.



Absolute Return

The return that an asset achieves over a period of time. Absolute return differs from relative return because it is concerned with the return of the asset being looked at and does not compare it to any other measure.

For example, if there has been a 5% increase in the price of Ford stock over the past year, then the holders of Ford stock have achieved an absolute return of 5% over the past year.

Accumulation Unit

Units where net income is automatically reinvested and is reflected in the price.

Active fund

Active funds have fund managers who use their expertise and large amounts of research to decide which investments the fund will hold. They adjust the fund's holdings on an ongoing basis, in response to performance and changes in market conditions.


Alpha is a financial metric that shows how an investment performs relative to a benchmark index. An investment that has positive alpha is outperforming the index.

Alternative Investment Market (AIM)

The Alternative Investment Market (AIM) is a sub-market of the London Stock Exchange (LSE) that is designed to help smaller companies access capital from the public market. AIM allows these companies to raise capital by listing on a public exchange with much greater regulatory flexibility compared to the main LSE stock market.


Annuities are usually used to provide an income in retirement. They’re long-term contracts from an insurance company which are purchased at a point in time, often at the point of retirement using pension savings. In return for your investment, you get income in the form of regular payments.

The income you will receive from an annuity is calculated by reviewing several factors, including your age, health, where you live and the size of your pension or lump sum.


A resource that a business owns or controls.

Asset class

An asset class is a group of financial instruments that have similar financial characteristics and behave similarly in the marketplace, for example shares, fixed income and cash are all different asset classes.

Often, assets within the same asset class are subject to the same laws and regulations; however, this is not always true.

Authorised Corporate Director (ACD)

An Authorised Corporate Director (ACD) is a regulated entity, looking after the day to day operations of a fund with an OEIC structure, a similar role to that of a manager of a Unit Trust scheme.


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