AT&T vs T-Mobile Family Plans: Per-Line Pricing for 2 to 5 Lines
Families represent the most valuable mobile customer segment, and both carriers structure their multi-line pricing to attract them. The gap between AT&T and T-Mobile family pricing is significant at higher line counts. At 4 lines on comparable mid-tier plans, T-Mobile Go5G costs $140 per month total while AT&T Unlimited Premium costs $204 per month. That is $64 per month or $768 per year in savings. Here is the full picture at every tier and line count.
Monthly Cost per Line by Plan Tier
Prices shown are per-line costs with autopay and paperless billing enabled. Multiply by your number of lines for total monthly cost. T-Mobile's per-line cost drops more aggressively at 3+ lines than AT&T's pricing structure.
Budget: Value Plus vs Essentials
| Lines | AT&T / Line | AT&T Total | T-Mobile / Line | T-Mobile Total | Annual Savings |
|---|---|---|---|---|---|
| 1 | $50.99 | $50.99 | $60.00 | $60.00 | $108(AT&T) |
| 2 | $42.99 | $85.98 | $40.00 | $80.00 | $72(T-Mobile) |
| 3 | $36.99 | $110.97 | $30.00 | $90.00 | $252(T-Mobile) |
| 4 | $36.99 | $147.96 | $26.25 | $105.00 | $516(T-Mobile) |
| 5 | $36.99 | $184.95 | $25.00 | $125.00 | $719(T-Mobile) |
Mid-Range: Unlimited Premium vs Go5G
| Lines | AT&T / Line | AT&T Total | T-Mobile / Line | T-Mobile Total | Annual Savings |
|---|---|---|---|---|---|
| 1 | $75.99 | $75.99 | $75.00 | $75.00 | $12(T-Mobile) |
| 2 | $62.99 | $125.98 | $50.00 | $100.00 | $312(T-Mobile) |
| 3 | $50.99 | $152.97 | $35.00 | $105.00 | $576(T-Mobile) |
| 4 | $50.99 | $203.96 | $35.00 | $140.00 | $768(T-Mobile) |
| 5 | $50.99 | $254.95 | $33.00 | $165.00 | $1079(T-Mobile) |
Premium: Unlimited Premium vs Go5G Plus
| Lines | AT&T / Line | AT&T Total | T-Mobile / Line | T-Mobile Total | Annual Savings |
|---|---|---|---|---|---|
| 1 | $75.99 | $75.99 | $85.00 | $85.00 | $108(AT&T) |
| 2 | $62.99 | $125.98 | $57.50 | $115.00 | $132(T-Mobile) |
| 3 | $50.99 | $152.97 | $43.75 | $131.25 | $261(T-Mobile) |
| 4 | $50.99 | $203.96 | $43.75 | $175.00 | $348(T-Mobile) |
| 5 | $50.99 | $254.95 | $41.00 | $205.00 | $599(T-Mobile) |
Top-Tier: Unlimited Ultimate vs Go5G Next
| Lines | AT&T / Line | AT&T Total | T-Mobile / Line | T-Mobile Total | Annual Savings |
|---|---|---|---|---|---|
| 1 | $85.99 | $85.99 | $100.00 | $100.00 | $168(AT&T) |
| 2 | $72.99 | $145.98 | $70.00 | $140.00 | $72(T-Mobile) |
| 3 | $55.99 | $167.97 | $52.50 | $157.50 | $126(T-Mobile) |
| 4 | $55.99 | $223.96 | $52.50 | $210.00 | $168(T-Mobile) |
| 5 | $55.99 | $279.95 | $50.00 | $250.00 | $359(T-Mobile) |
Which Carrier Is Cheaper at Each Line Count?
At 1 line, AT&T Value Plus ($50.99) is cheaper than T-Mobile Essentials ($60.00) by $9/month. However, T-Mobile becomes cheaper starting at 2 lines and the gap widens with each additional line. By 4 lines, T-Mobile Essentials saves $516/year versus AT&T Value Plus.
At the mid-range tier, the comparison shifts differently. AT&T Unlimited Premium and T-Mobile Go5G are both $75.99 and $75.00 respectively for a single line, making them nearly identical. But at 4 lines, T-Mobile Go5G drops to $35/line ($140 total) while AT&T stays at $50.99/line ($204 total). That is a $768/year gap.
The only scenario where AT&T consistently wins on price is for single-line users on the Value Plus plan. Every multi-line scenario favors T-Mobile.
Real Family Scenario: 4 Lines, 2 Adults, 2 Teens
A typical family of four needs reliable coverage for parents (who use the phone for work calls, email, and navigation) and sufficient data for teens (who stream video, use social media, and play online games). Here is the recommended plan on each carrier and what the total cost looks like monthly and annually.
AT&T Recommendation
Unlimited Premium for all 4 lines. Provides truly unlimited priority data (no deprioritization), 60GB hotspot per line, and HBO Max with ads included. This is the best AT&T plan for families who need reliable data for streaming and work.
$203.96/month
$50.99/line with autopay
$2,447.52/year
T-Mobile Recommendation
Go5G Plus for all 4 lines. Truly unlimited priority data, 50GB hotspot per line, Netflix Standard included, and free international data in 215+ countries. Best balance of features and value for families.
$175.00/month
$43.75/line with autopay
$2,100.00/year
T-Mobile saves this family $28.96/month or $347.52/year on the premium tier, while also including Netflix Standard (worth an additional $186/year) and free international roaming.
Perks Included per Plan Tier
The monthly price does not tell the full story. Both carriers bundle streaming services and other perks at their premium tiers. These perks have real dollar value.
| Perk | AT&T Plan Required | T-Mobile Plan Required |
|---|---|---|
| Netflix Standard ($15.49/mo) | Not available | Go5G Plus or higher |
| HBO Max with ads ($9.99/mo) | Unlimited Premium or higher | Not available |
| Apple TV+ ($9.99/mo) | Not available | Go5G Next |
| International data (215+ countries) | $10/day per line extra | Go5G or higher (free) |
| Max trade-in credit ($1,000) | Unlimited Premium (36 mo) | Go5G Plus (24 mo) |
Best Value Recommendation by Family Size
2 Lines (Couple)
T-Mobile Go5G at $100/month ($50/line) beats AT&T Unlimited Premium at $126/month ($63/line). Annual savings: $312. T-Mobile also includes international data at this tier. For budget-conscious couples, T-Mobile Essentials at $80/month ($40/line) provides basic unlimited service at $6/month less than AT&T Value Plus ($86/month).
3 Lines (Small Family)
T-Mobile Go5G Plus at $131.25/month ($43.75/line) provides Netflix, international data, and priority data for less than AT&T Unlimited Premium at $152.97/month ($50.99/line). Annual savings: $261. The Netflix perk alone adds $186/year in value on top of the monthly savings.
4 to 5 Lines (Full Family)
T-Mobile Go5G Plus at $175/month (4 lines at $43.75/line) or $205/month (5 lines at $41/line) delivers the best overall value. AT&T Unlimited Premium costs $204/month for 4 lines and $255/month for 5 lines. Annual savings range from $348 to $600 depending on line count. At this family size, T-Mobile's pricing advantage is at its largest.
When AT&T Makes More Sense for Families
Despite T-Mobile's pricing advantage, certain families may find AT&T to be the better choice:
- Rural location: If your home is in a rural area where AT&T has stronger coverage, reliable service is worth the price premium. Check both coverage maps for your address.
- AT&T Fiber bundle: If you have AT&T Fiber internet, bundling wireless saves $10/month per line. For 4 lines, that is $40/month or $480/year, which significantly narrows or eliminates the pricing gap.
- HBO Max value: If your family already subscribes to HBO Max, the included subscription on Unlimited Premium saves $120/year.
- FirstNet eligibility: First responders and public safety personnel get significant discounts and priority access through FirstNet plans not available on T-Mobile.