Tetra Tech reported $4.44B of remaining performance obligations at 28 Jun 2026, up 5% from a year earlier and up 5% from the previous quarter. That is 0.9 years of trailing revenue already under contract. Book-to-bill last quarter: 1.16.
Net new backlog added in the latest quarter: $215M.
Over the last twelve months it turned about 123% of its opening backlog into revenue (12-month conversion).
73% of the backlog is due within the next twelve months.
Customer prepayments (contract liabilities) cover 6.0% of the backlog.
Twelve-month book-to-bill: 1.04, i.e. 1.04 of new orders for every 1 of revenue recognised.
Backlog growth minus revenue growth: +12 points — orders are running ahead of revenue.
By backlog size it ranks 119th among US filers the cockpit tracks.
Tetra Tech backlog history
Remaining performance obligations at each quarter end (bars) against trailing twelve-month revenue (line).
Amounts in USD. Source: SEC XBRL filings.
Quarter end
Backlog (RPO)
TTM revenue
Coverage
Customer prepayments
28 Jun 2026
$4.44B
$5.07B
0.9 yrs
$268M
29 Mar 2026
$4.22B
$5.13B
0.8 yrs
$267M
28 Dec 2025
$3.92B
$5.23B
0.7 yrs
$298M
28 Sep 2025
$4.10B
$5.44B
0.8 yrs
$285M
29 Jun 2025
$4.24B
$5.49B
0.8 yrs
$390M
30 Mar 2025
$4.26B
$5.46B
0.8 yrs
$374M
29 Dec 2024
$5.39B
$5.39B
1.0 yrs
$360M
29 Sep 2024
$5.33B
$5.20B
1.0 yrs
$222M
30 Jun 2024
$5.19B
$5.08B
1.0 yrs
$372M
31 Mar 2024
$4.71B
$4.95B
1.0 yrs
$374M
31 Dec 2023
$4.71B
$4.86B
1.0 yrs
$383M
1 Oct 2023
$4.76B
$4.52B
1.1 yrs
$335M
Questions
What is Tetra Tech's backlog?
Tetra Tech reported $4.44B of remaining performance obligations at 28 Jun 2026, up 5% from a year earlier and up 5% from the previous quarter. That is 0.9 years of trailing revenue already under contract. Book-to-bill last quarter: 1.16.
How fast does Tetra Tech's backlog turn into revenue?
Over the last twelve months Tetra Tech recognised revenue equal to about 123% of the backlog it started each quarter with.
About these numbers
Remaining performance obligations (RPO) are revenue a company has contracted but not yet recognised, as reported in its SEC filings (XBRL tag RevenueRemainingPerformanceObligation). Coverage = backlog ÷ trailing twelve-month revenue. Book-to-bill = (change in backlog + revenue) ÷ revenue. Conversion = revenue recognised ÷ the backlog at the start of each quarter, summed over four quarters. Counterparty values come from company filings and releases.