Managing multiple mobile plans in a household adds up fast. A family of four on individual $50/month plans is spending $2,400/year on mobile. Family or multi-line plans from some providers offer meaningful discounts when you combine multiple connections under one account.
Option 1: Switch all lines to Skinny Mobile or 2degrees (cheapest individual plans, each managed separately)
Option 2: Use 2degrees multi-line discount (additional lines cheaper)
Option 3: Spark Family Plan (multi-line discount for 3+ Spark lines)
For most families, switching all lines to Skinny or 2degrees and managing individually will deliver the biggest total saving.
The Family Mobile Maths
Before looking at family plans, run the basic numbers for your household:
| Current situation | Monthly | Annual |
|---|---|---|
| 4 people on Spark ~$55/month each | $220/month | $2,640 |
| 4 people on Skinny ~$35/month each | $140/month | $1,680 |
| Saving by switching to Skinny | $80/month | $960/year |
Simply switching from Spark to Skinny (same network) can save a family of four nearly $1,000/year.
Option 1 — Switch All Lines to Skinny Mobile (Recommended for Most Families)
The simplest approach: move every family member to Skinny Mobile’s $30–$35/month monthly plans. Each person manages their own account independently, but the per-person cost is dramatically lower.
Skinny $30/month plan:
- ~8GB data
- Unlimited NZ calls and texts
- Spark network coverage (best rural coverage in NZ)
- No contract
For 4 people: $120/month total ($1,440/year)
Compare to 4 people on Spark $55/month plans: $220/month ($2,640/year) — saving $1,200/year.
Option 2 — 2degrees Multi-Line Plans
2degrees offers discounted pricing when you add multiple lines to a single account. Additional lines added to a primary plan are typically $5–$15/month cheaper than the standard individual plan price.
How it works:
- Primary plan holder sets up the account
- Additional family members are added as secondary lines
- Discounted pricing applies from the 2nd line onwards
Example (approximate 2026 pricing):
- Primary: $40/month (25GB)
- Each additional line: $30–$35/month (15–20GB)
- 4-line family total: ~$130–$145/month
Check 2degrees.co.nz for current multi-line family plan pricing.
Option 3 — Spark Family Plan
Spark offers a family plan where 3+ lines on qualifying Spark plans get a discount of $5–$10/month per line. Given Spark’s higher baseline pricing, the discounted total is often still more expensive than 4 individual Skinny plans.
Example (approximate):
- Spark $55/month plan × 4 people = $220/month
- Spark Family discount (~$10/month off each line from 2nd) = $220 - $30 = $190/month
- 4 Skinny lines at $35/month = $140/month
Skinny still wins on total cost for most families.
When Spark Family is justified:
- You’re in a rural area and need Spark’s coverage specifically for all family members
- Some family members need premium support (Spark retail store access)
Kids’ Mobile Plans — What to Consider
For children (under 12): Prepay is often the most sensible model. A Skinny $16 or $25 prepay combo gives:
- 1.5–5GB data
- Adequate calls/texts
- Parental control via budget — when credit runs out, it runs out
For teenagers (13–17): A Skinny $30/month SIM-only plan is cost-effective and gives them reasonable data without the expense of a full handset plan.
Parental controls: Both Spark (and Skinny) and One NZ have family content filtering and usage monitoring available via the account portal. 2degrees has more limited parental controls — check current availability.
Shared Data Plans — Do They Exist in NZ?
True shared data pools (where a family shares a single large data allowance across multiple lines) are limited in NZ in 2026. The 2degrees multi-line approach comes closest, but each line generally has its own data allowance.
If shared data matters, ask each provider directly about current multi-line data sharing options as these do change periodically.
Summary: Best Family Approach by Situation
| Family situation | Recommended approach |
|---|---|
| All in urban/suburban areas | 4× Skinny $30/month plans |
| Rural location needing Spark coverage | 4× Skinny $30/month (same network as Spark) |
| Want single account management | 2degrees multi-line plan |
| Some need more data than others | Individual Skinny or 2degrees plans sized to each person |
| Kids on first phone | Skinny prepay ($16–$25/month) |