KLA reported $7.86B of remaining performance obligations at 30 Jun 2025, down 20% from a year earlier and down 12% from the previous quarter. That is 0.6 years of trailing revenue already under contract. Book-to-bill last quarter: 0.67.
Net new backlog added in the latest quarter: -$1.05B.
Over the last twelve months it turned about 129% of its opening backlog into revenue (12-month conversion).
Customer prepayments (contract liabilities) cover 21.8% of the backlog.
Twelve-month book-to-bill: 0.84, i.e. 0.84 of new orders for every 1 of revenue recognised.
Backlog growth minus revenue growth: -44 points — revenue is catching up with orders.
The latest filed figure is more than 200 days old.
KLA 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
30 Jun 2025
$7.86B
$12.2B
0.6 yrs
$1.71B
31 Mar 2025
$8.91B
$11.6B
0.8 yrs
$1.73B
31 Dec 2024
$9.14B
$10.8B
0.8 yrs
$1.93B
30 Sep 2024
$10.0B
$10.3B
1.0 yrs
$1.71B
30 Jun 2024
$9.83B
$9.81B
1.0 yrs
$1.78B
31 Mar 2024
$9.90B
$9.60B
1.0 yrs
$1.72B
31 Dec 2023
$10.7B
$9.67B
1.1 yrs
$1.55B
30 Sep 2023
$10.8B
$10.2B
1.1 yrs
$1.26B
30 Jun 2023
$11.4B
$10.5B
1.1 yrs
$1.25B
31 Mar 2023
$11.9B
$10.6B
1.1 yrs
$1.07B
31 Dec 2022
$12.5B
$10.5B
1.2 yrs
$1.07B
30 Sep 2022
$13.7B
$9.85B
1.4 yrs
$933M
Questions
What is KLA's backlog?
KLA reported $7.86B of remaining performance obligations at 30 Jun 2025, down 20% from a year earlier and down 12% from the previous quarter. That is 0.6 years of trailing revenue already under contract. Book-to-bill last quarter: 0.67.
How fast does KLA's backlog turn into revenue?
Over the last twelve months KLA recognised revenue equal to about 129% 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.