Best for: Monthly income seekers wanting NS&I security.
Junior ISA
Feature
Details
Interest rate
Variable
Minimum
£1
Maximum
£9,000/year
Access
Child at 18
Tax
Tax-free
Green Savings Bonds
Feature
Details
Term
Fixed (2 or 3 years)
Interest rate
Fixed for term
Minimum
£100
Maximum
£100,000
Purpose
Funds government green projects
Tax
Interest is taxable
Best for: Environmentally-conscious savers who want to support green initiatives.
Guaranteed Growth Bonds / Guaranteed Income Bonds
Feature
Guaranteed Growth
Guaranteed Income
Term
1-5 years
1-5 years
Interest paid
At maturity
Monthly
Rate
Fixed for term
Fixed for term
Minimum
£500
£500
Maximum
£1 million
£1 million
Availability: Not always on sale — check NS&I for current offerings.
How NS&I Rates Compare
Comparison with Banks (Indicative)
Product
NS&I Rate
Best Buy Alternative
Easy access
~4%
4.5-5%
1-year fixed
~4%
4.5-5%
Premium Bonds
~4% prize rate
4.5-5% guaranteed
Note: NS&I rates change. Best buy rates from banks/building societies often beat NS&I but lack the same security.
Tax Treatment
Taxable Products
Product
Taxable
Direct Saver
Yes — uses PSA
Income Bonds
Yes — uses PSA
Guaranteed Bonds
Yes — uses PSA
Green Savings Bonds
Yes — uses PSA
Tax-Free Products
Product
Tax Status
Premium Bonds
All prizes tax-free
Junior ISA
Tax-free
ISAs (when available)
Tax-free
Personal Savings Allowance Reminder
Tax Band
PSA
Basic rate
£1,000 tax-free
Higher rate
£500 tax-free
Additional rate
£0
Premium Bond prizes don’t count against PSA.
Opening an NS&I Account
Requirements
Requirement
Details
Age
16+ (Premium Bonds), varies by product
Residence
UK resident
ID
National Insurance number, bank details
Verification
HMRC data check
How to Open
Go to nsandi.com
Choose your product
Register or log in
Complete application
Fund via debit card or bank transfer
Confirmation received
App Access
NS&I app allows:
Balance checking
Prize winner results
Account management
Reinvesting prizes
Cashing in bonds
NS&I for Large Savings
Why Choose NS&I Over £85,000
Amount
FSCS Protected
NS&I Protected
£85,000
100%
100%
£250,000
£85,000
100%
£1 million
£85,000
100%
For large deposits, NS&I offers complete security without splitting across institutions.
Strategy for Large Sums
Priority
Action
First £85,000
Banks for best rates (FSCS covered)
Above £85,000
NS&I for security
Alternative
Split across multiple banks
Pros and Cons
Pros
✅ 100% government backed
✅ Premium Bond prizes tax-free
✅ Higher rate taxpayers benefit from tax-free prizes
✅ Good for large sums above FSCS limit
✅ No risk to capital
✅ Ethical Green Savings Bonds
Cons
❌ Rates often below best buy
❌ Premium Bond returns not guaranteed
❌ Limited product range
❌ Some products not always available
❌ Withdrawal takes 2-3 days
❌ Customer service can be slow