CATEGORY: Savings
DESCRIPTION: Money market funds have grown hugely popular as a cash alternative for investors. Here's what they are, how they work, and whether they're right for you.

SECTION: What Is a Money Market Fund?
A money market fund (MMF) is a type of investment fund that holds very short-term, highly liquid debt instruments — such as Treasury bills, short-dated government bonds, and commercial paper issued by highly-rated companies. The goal is to provide a return close to prevailing interest rates while preserving capital and maintaining easy access to funds.

They're not savings accounts, and they're not protected by the Financial Services Compensation Scheme (FSCS) in the same way as bank deposits. But they're among the most conservative investment options available.

SECTION: Why Have They Become More Popular?
When interest rates were very low (essentially zero), money market funds offered negligible returns and there was little reason for most retail investors to hold them. But as the Bank of England raised rates significantly from 2022 onwards, money market fund yields rose to match — often offering returns competitive with the best easy-access savings accounts, while being accessible through investment platforms.

This made them attractive to investors who hold cash within an investment account and don't want it sitting idle earning nothing while awaiting investment opportunities.

SECTION: How Do Returns Work?
Money market funds aim to maintain a stable net asset value — typically £1 per unit — while accumulating interest. You buy units at £1, receive interest income daily (usually reinvested or paid monthly), and can redeem units quickly at the same £1 price.

Yields fluctuate with short-term interest rates. When the Bank of England base rate is 4.5%, a money market fund might yield 4.1–4.4% after charges. As the base rate moves, the fund's yield adjusts accordingly — often within days.

SECTION: Examples of UK Money Market Funds
Some widely available options on UK platforms:
- Royal London Short Term Money Market Fund
- Vanguard Sterling Short-Term Money Market Fund
- BlackRock Cash Fund

These are available through platforms such as Hargreaves Lansdown, Fidelity, and AJ Bell. They can be held within an ISA, SIPP, or general investment account.

SECTION: Are They Safe?
Money market funds are very low risk — but they're not risk-free, and they're distinct from bank savings accounts:

Pros: Highly liquid, very conservative, returns closely track the base rate, no fixed term.
Cons: Not FSCS-protected (though the underlying securities are high quality), returns are not guaranteed, they can (in extreme circumstances) "break the buck" — i.e. the unit value falls below £1. This is exceptionally rare for sterling government-focused funds.

If capital protection is paramount and you're uncertain about risk, a bank savings account with FSCS protection is technically safer — though the real-world credit risk on a well-managed money market fund holding UK government-backed instruments is extremely low.

SECTION: Money Market Funds vs Easy-Access Savings Accounts
Similarities: Both offer relatively easy access and returns linked to current interest rates.

Key differences:
- FSCS protection: Savings accounts are protected up to £85,000 per bank. Money market funds are not covered.
- Tax treatment: Both generate taxable income outside an ISA. Within an ISA, both are tax-free.
- Platform access: Money market funds require an investment platform account; savings accounts can be opened directly with banks.
- Rate matching: Savings accounts offer fixed or managed rates. Money market funds track the market more dynamically — good in rising rate environments, slower to adjust downward when rates fall.

SECTION: Who Are Money Market Funds For?
Money market funds suit:
- Investors with a general investment account who hold cash while deciding where to invest — rather than leaving it in a 0% cash account on their platform.
- People who've maxed their savings FSCS protection limits and want a sensible home for additional cash.
- Those who hold a SIPP and want a cash-like option for the drawdown phase without selling into volatile markets.

They're less relevant for people who are simply looking for the best savings rate and don't already have an investment platform.

SECTION: SimpleMoney Verdict
Money market funds are a sensible cash management tool for investors, not a replacement for traditional savings accounts. If you hold cash on an investment platform and it's sitting in a 0% cash account, a money market fund is almost certainly a better option. But for straightforward cash savings, compare FSCS-protected easy-access accounts first.