Savings and investment information is for educational purposes only. The value of investments can go down as well as up. Cash savings up to £85,000 per person per institution are protected by the FSCS.
ISAs (Individual Savings Accounts) let you save or invest tax-free. Here’s how to choose the best ISA provider for your needs.
ISA Types at a Glance
ISA Type
Best For
2026/27 Allowance
Cash ISA
Short-term savings, security
£20,000
Stocks and Shares ISA
Long-term growth
£20,000
Lifetime ISA
First home or retirement (18-39 only)
£4,000
Junior ISA
Children’s savings
£9,000
Total allowance is £20,000 across all ISAs (except Junior ISA which is separate).
Best Cash ISA Providers
Easy-Access Cash ISAs
What to Look For
Why It Matters
Competitive rate
Maximise returns
No withdrawal penalties
Access money when needed
Flexible ISA
Withdraw and replace within tax year
FSCS protected
Up to £85,000
Fixed-Rate Cash ISAs
Term
Typical Rates
Best For
1 year
4.5-5.0%
Known short-term costs
2 year
4.3-4.8%
Locking in good rate
3-5 year
4.0-4.6%
Long-term cash security
Cash ISA Calculator
Amount
Rate
After 1 Year
After 5 Years
£10,000
4.5%
£10,450
£12,462
£20,000
4.5%
£20,900
£24,924
£50,000
4.5%
£52,250
£62,310
All returns are tax-free.
Best Stocks and Shares ISA Providers
Platform Comparison
Platform Type
Best For
Typical Fees
Low-cost providers
Index fund investors
0.15-0.35%/year
DIY platforms
Active traders
Per-trade fees
Ready-made portfolios
Hands-off investors
0.25-0.75%/year
Full-service
Those wanting advice
1%+ per year
Popular Providers by Category
Category
Examples
Annual Fee
Notes
Lowest cost funds
Vanguard
0.15%
Own funds only
Low cost, wide choice
InvestEngine
0%
Limited fund range
Wide choice, per-trade
AJ Bell, Hargreaves
£0-12/trade
Better for larger pots
Ready-made
Nutmeg, Wealthify
0.25-0.75%
Managed for you
Fee Impact Over Time
£20,000 invested, 6% growth:
Platform Fee
Value After 10 Years
Value After 20 Years
0.15%
£35,265
£62,292
0.50%
£33,881
£57,283
1.00%
£31,948
£50,967
A 0.85% fee difference costs over £11,000 over 20 years.
Stocks and Shares ISA Investment Options
Types of Investments
Investment
Risk
Potential Return
Best For
Index funds
Medium
Market returns
Most investors
Individual shares
Higher
Variable
Experienced investors
Bonds/gilts
Lower
Lower
Near retirement
Ready-made portfolios
Mixed
Market-ish
Hands-off investors
Recommended for Beginners
Approach
What to Buy
Why
Global tracker
World index fund
Diversified, simple
Portfolio fund
Multi-asset fund
One-fund solution
Robo-advisor
Managed portfolio
Automated rebalancing
Lifetime ISA Providers
LISA Rules
Feature
Cash LISA
Stocks and Shares LISA
Max contribution
£4,000/year
£4,000/year
Government bonus
25% (up to £1,000/year)
25% (up to £1,000/year)
Use for
First home or retirement
First home or retirement
Withdrawal penalty
25% (if not for home/retirement)
25% (if not for home/retirement)
Which LISA Type?
If Buying Within
Choose
Why
1-3 years
Cash LISA
Capital protection
5+ years
S&S LISA
Growth potential
LISA Example
Contribution
Government Bonus
Total
£4,000/year
£1,000/year
£5,000/year
£4,000/year × 5 years
£5,000 total bonus
£25,000
That’s £5,000 free money toward your first home.
Junior ISA Providers
JISA Features
Feature
Detail
Annual limit
£9,000 (2026/27)
Who can contribute
Anyone
Access
Child at age 18
Tax status
Tax-free
Cash vs Stocks and Shares JISA
Factor
Cash JISA
S&S JISA
Best for
Older children
Younger children
Time horizon
Under 5 years to 18
Over 5 years to 18
Risk
None
Market risk
Growth potential
Lower
Higher
JISA Growth Example
£100/month from birth:
JISA Type
Assumed Return
Value at 18
Cash
3%
£28,500
Stocks and Shares
6%
£38,500
S&S JISA potentially delivers £10,000 more, but with market risk.
How to Choose Your ISA Provider
Cash ISA Decision
Priority
Choose
Best rate overall
Compare current best buys
Easy access needed
Easy-access ISA
Won’t need money
Fixed-rate ISA
App experience
Online banks
Stocks and Shares ISA Decision
Your Situation
Consider
Beginner, small amounts
Vanguard, InvestEngine
Want it managed
Nutmeg, Wealthify
Experienced investor
AJ Bell, Hargreaves
Large portfolio
Compare % vs flat fees
Fee Structure Comparison
Portfolio Size
% Fee (0.45%)
Flat Fee (£100/yr)
Better Option
£10,000
£45
£100
% fee
£20,000
£90
£100
% fee
£30,000
£135
£100
Flat fee
£50,000
£225
£100
Flat fee
Switch to flat fee platform as your portfolio grows.
ISA Strategy
Getting Started
Step
Action
1
Decide: savings (Cash ISA) or investing (S&S ISA)
2
Choose time horizon
3
Compare providers
4
Open account and fund
5
For S&S: choose investments
Using Your £20,000 Allowance
Example Split
Cash ISA
S&S ISA
LISA
Short-term focus
£15,000
£1,000
£4,000
Growth focus
£5,000
£11,000
£4,000
Balanced
£10,000
£6,000
£4,000
Key Takeaways
Use your allowance — £20,000/year is “use it or lose it”
Fees matter — small differences compound significantly
Match ISA to timeframe — Cash for short, S&S for long
LISA bonus is free money — if eligible, consider it
Transfer old ISAs — consolidate and get better rates/fees