SBA Communications (SBAC) Q1 2026 earnings review
International Growth Masks Domestic Contraction and Interest Rate Bite
SBA Communications reported a mixed quarter that highlights a portfolio in transition. Top-line revenue grew 5.9% YoY driven entirely by a massive 32.6% surge in International Site Leasing following the Millicom Central America acquisition. However, the legacy profit engine—Domestic Site Leasing—contracted 2.3% YoY after management scrubbed all EchoStar revenue from the books due to non-payment. More concerning for REIT investors is the bottom line: a 32.1% spike in net cash interest expense dragged Net Income down 15.1% and compressed AFFO per share by 4.7%. Despite raising full-year guidance, the shift toward lower-margin international revenue and a higher cost of debt creates a structural headwind for profitability.
🐂 Bull Case
The Millicom portfolio integration is paying off. International Site Leasing revenue jumped 32.6% YoY to $205.8M, completely offsetting domestic weakness and proving SBA can successfully execute large-scale M&A in emerging markets.
Even after completely removing EchoStar revenue from its 2026 baseline, SBA increased its full-year outlook for Revenue, Tower Cash Flow, and AFFO, signaling strong underlying carrier activity and favorable foreign exchange dynamics.
🐻 Bear Case
U.S. Site Leasing revenue fell 2.3% YoY to $450.3M. The combination of EchoStar non-payments and residual Sprint consolidation churn is shrinking the company's highest-margin business segment.
Net cash interest expense surged 32.1% YoY to $123.3M. As older, low-cost debt matures in a 'higher for longer' rate environment, this headwind will continue to structurally depress AFFO per share.
⚖️ Verdict: ⚪
Neutral. Management is executing well on international expansion and balance sheet health, but you cannot ignore a shrinking domestic segment and climbing debt costs in a yield-sensitive REIT.
Key Themes
Domestic Leasing Reverses into Contraction
A major break in trend: Domestic Site Leasing revenue reversed from historical growth to a 2.3% YoY decline ($450.3M). Segment operating profit followed, dropping 3.3%. This is a direct consequence of the Sprint merger churn and management's decision to write off all contracted revenue from EchoStar due to a payment dispute. Because the domestic segment carries higher margins (84.3%), this contraction disproportionately harms overall profitability.
Surging Interest Expense Eating Cash Flow
Net cash interest expense skyrocketed 32.1% YoY from $93.4M to $123.3M. This higher cost of capital is the primary reason total AFFO declined 6.5% YoY despite top-line revenue growth. With the $1.16B 2021-1C Tower Securities maturing in November 2026 (assumed to be refinanced at a higher 5.25% fixed rate), this debt-servicing headwind is a multi-year reality.
International Operations Take the Wheel
International site leasing was the sole growth engine, accelerating 32.6% YoY to $205.8M. This segment is benefiting heavily from the Central American Millicom asset integration, expanding SBA's footprint significantly. Tower Cash Flow for the international segment leaped 31.6%, validating the unit economics of these new emerging market assets.
Margin Compression Deepens
As the business mix shifts from U.S. to international, overall margins are decelerating. Adjusted EBITDA margin dropped from 69.0% in 25Q1 to 68.1% in 26Q1. Tower Cash Flow margin also slipped from 80.9% to 79.8%. The international segment operates at a ~70% margin compared to the domestic segment's ~84%, meaning every dollar of new international growth is less profitable than a dollar of lost domestic revenue.
Steady Underlying Network Densification
Despite the EchoStar noise, fundamental macro demand remains stable. Management noted carriers continue to upgrade sites with new spectrum bands globally. Furthermore, domestic leasing backlogs actually increased during the quarter, providing a solid pipeline of future colocations and amendments.
Other KPIs
Decelerating. Grew 4.0% YoY, failing to keep pace with the 5.9% total revenue growth. This signals negative operating leverage due to the shift toward lower-margin international assets and higher general administrative expenses.
Stable. Up slightly from 6.4x a year ago, but sitting perfectly within management's revised 6.0x to 7.0x target range established in late 2025 to pursue an investment-grade credit rating. This discipline protects the dividend but leaves less room for massive debt-fueled acquisitions.
Reversing. Declined 1.6% YoY after a period of massive outperformance in 2025. While a smaller part of the overall business, this segment is highly sensitive to carrier capital expenditure timing.
Guidance
Stable. Management raised the midpoint by $24M compared to their February outlook. The midpoint of $2.86B implies roughly 1.5% YoY growth against FY25's estimated total revenue, absorbing the EchoStar write-off but indicating a deceleration from historic growth rates.
Decelerating. The midpoint was raised $0.09 from the prior outlook, primarily due to favorable FX rates rather than operational beats. This still represents a YoY decline compared to FY25, highlighting the severe drag of higher interest rates.
Accelerating. Raised significantly year-over-year. Management explicitly assumes the $1.16B 2021-1C Tower Securities due in November 2026 will be refinanced prior to Q4 at a fixed rate of 5.25%, locking in higher debt servicing costs.
Key Questions
EchoStar Write-off Permanence
With all EchoStar revenue removed from the 2026 baseline due to non-payment, are these leases actively being terminated and marketed to other carriers, or is there an expectation of recovering these back payments?
International Margin Ceiling
As the Millicom portfolio scales, International Site Leasing operating margin sits at 70.2%. What is the structural ceiling for margins in these Central American markets compared to the mid-80s profile of the U.S. portfolio?
Refinancing Strategy
Guidance assumes the $1.16B 2021-1C Tower Securities will be refinanced at 5.25%. Given recent market volatility, what backup liquidity plans are in place if the unsecured debt market becomes less favorable prior to Q4?
U.S. Colocation Pipeline
Management noted U.S. leasing backlogs increased sequentially. Can you break down how much of this backlog is driven by new fixed wireless access (FWA) deployments versus traditional mobile densification?