Pay As You Go vs Monthly Plans
Which SIM Plan Type is Right for You?
Complete comparison of pay-as-you-go and monthly SIM plans. Find out which option saves you money and suits your mobile usage patterns best.
Quick Comparison
| Feature | Pay As You Go | Monthly Plans |
|---|---|---|
| Contract | ✓ No contract | ✓ No contract (with MVNOs) |
| Flexibility | ✓ Maximum flexibility | ~ Monthly commitment |
| Cost Control | ✓ Pay only what you use | ✓ Fixed monthly cost |
| Value for Heavy Users | ✗ Can be expensive | ✓ Better value |
| Best For | Light users, backup phones | Regular users, predictable usage |
| Typical Cost | £5-15/month (varies) | £6-25/month (fixed) |
Pay As You Go (PAYG)
How It Works
With PAYG, you add credit to your account and pay for calls, texts, and data as you use them. No monthly commitment - you only spend money when you actually use your phone.
Advantages
- ✓ Ultimate Flexibility: Use as much or as little as you need
- ✓ No Bill Shock: Can't spend more than your credit
- ✓ Perfect for Light Users: Ideal if you rarely use your phone
- ✓ Great for Children: Parents control spending
- ✓ Backup Phone: Perfect for emergency phones
- ✓ No Commitment: Stop using anytime
Disadvantages
- ✗ Expensive for Heavy Use: Per-minute rates add up
- ✗ Credit Expiry: Unused credit may expire
- ✗ Less Predictable: Costs vary month to month
- ✗ Manual Top-Ups: Need to remember to add credit
Best For:
- • Light mobile users (under 100 minutes/month)
- • Backup or emergency phones
- • Children's first phones
- • Elderly users with minimal usage
- • Temporary UK visitors
Monthly Plans (No Contract)
How It Works
Monthly plans (also called bundles or goodybags) give you a fixed allowance of calls, texts, and data each month for a set price. With MVNOs like GiffGaff and Lebara, there's no long-term contract.
Advantages
- ✓ Better Value: Much cheaper per minute/MB for regular users
- ✓ Predictable Costs: Know exactly what you'll pay
- ✓ Generous Allowances: Unlimited calls/texts standard
- ✓ Automatic Renewal: No need to remember top-ups
- ✓ Premium Features: Often includes 5G, EU roaming
- ✓ Still Flexible: Cancel or change anytime (no contract)
Disadvantages
- ✗ Pay Even if Unused: Monthly fee regardless of usage
- ✗ Overage Charges: Extra costs if you exceed allowance
- ✗ Wasteful for Light Users: Paying for unused data
- ✗ Auto-Renewal: Need to remember to cancel
Best For:
- • Regular mobile users (100+ minutes/month)
- • Data users (streaming, social media)
- • Students and young professionals
- • Anyone wanting predictable bills
- • Users who want premium features
Cost Comparison Examples
Light User (50 mins, 50 texts, 500MB/month)
PAYG Cost:
- 50 mins @ 8p/min = £4.00
- 50 texts @ 4p/text = £2.00
- 500MB @ 10p/MB = £5.00
- Total: ~£11/month
Monthly Plan Cost:
- £6 plan includes:
- Unlimited calls & texts
- 1GB data
- Total: £6/month
Winner: Monthly Plan (saves £5/month)
Very Light User (10 mins, 10 texts, 100MB/month)
PAYG Cost:
- 10 mins @ 8p/min = £0.80
- 10 texts @ 4p/text = £0.40
- 100MB @ 10p/MB = £1.00
- Total: ~£2.20/month
Monthly Plan Cost:
- Cheapest plan: £6/month
- Includes unlimited calls/texts
- 1GB data (mostly unused)
- Total: £6/month
Winner: PAYG (saves £3.80/month)
Heavy User (500 mins, 200 texts, 10GB/month)
PAYG Cost:
- 500 mins @ 8p/min = £40.00
- 200 texts @ 4p/text = £8.00
- 10GB @ 10p/MB = £100.00
- Total: ~£148/month
Monthly Plan Cost:
- £15 plan includes:
- Unlimited calls & texts
- 20GB data
- Total: £15/month
Winner: Monthly Plan (saves £133/month!)
Decision Guide
Choose Pay As You Go If:
- ✓ You use your phone less than 50 minutes per month
- ✓ You need a backup or emergency phone
- ✓ You're buying a phone for a child
- ✓ You're visiting the UK temporarily
- ✓ You want absolute control over spending
- ✓ You rarely use mobile data
Choose Monthly Plans If:
- ✓ You use your phone regularly (100+ minutes/month)
- ✓ You use mobile data for social media, streaming, or browsing
- ✓ You want predictable monthly costs
- ✓ You want premium features like 5G and EU roaming
- ✓ You don't want to worry about running out of credit
- ✓ You want the best value for money
Compare Pay As You Go SIM Rates
How the two networks we recommend charge on PAYG versus their rolling monthly bundles — this is where the real cost difference shows up.
| Charge | Giffgaff PAYG rates | Giffgaff goodybag (monthly) |
|---|---|---|
| Data | Per-MB rates — adds up fast | 500MB–unlimited from ~£6/month |
| UK minutes | Charged per minute from credit | Unlimited included |
| UK texts | Charged per text from credit | Unlimited included |
| 5G access | Available | Included at no extra cost |
| Best for | Emergency/backup phone, very light use | Anyone using data most days |
Rule of thumb: if you'd spend more than £5-£6/month on PAYG credit, a rolling goodybag or Lebara plan works out cheaper.
PAYG vs Monthly: FAQs
Is pay as you go cheaper than a monthly SIM plan?
For light users yes — if you use under 1-2GB a month, PAYG credit can cost £5 or less. But for regular users, a rolling monthly plan is almost always better value: £10 buys 10GB+ on a monthly plan, while the same credit on PAYG rates would cover only a fraction of that usage.
Do pay as you go SIMs expire?
Yes. Most networks require some activity (a call, text or data use) every 3-6 months, or they deactivate the SIM and you lose any remaining credit. A top-up every few months keeps a PAYG SIM active.
Can I switch from pay as you go to a monthly plan?
Yes. You can keep your number by requesting a PAC code from your current network (text PAC to 65075) and giving it to the new network. Swapping from PAYG to a rolling monthly plan takes 1-2 working days.
What is the cheapest monthly SIM only deal with no contract?
Lebara plans start from around £5/month and Giffgaff goodybags from around £6/month. Both are rolling 30-day plans with no contract, no credit check and no early termination fees.
Do monthly SIM plans need a credit check?
Rolling 30-day plans from MVNOs like Giffgaff and Lebara do not require a credit check. Traditional 12-24 month contracts from the major networks do.
Ready to Choose Your Plan?
Get your free SIM card today with flexible options for both PAYG and monthly plans