Abrams and ALTIUS Delivered, But Further Delays Emerge
Authors: Joe OโConnor, Eric Gomez, Shikhar Chaturvedi, Danielle Kremer, and Wyeth Lindberg
Taiwanโs legislature failed to reach an agreement on a special procurement budget to fund U.S. arms sales in March, which is already delaying Foreign Military Sales (FMS) cases worth over $10 billion.
But March had good news for the U.S. arms sale backlog as well. A June 2024 FMS case for ALTIUS drones was fully delivered, reducing the backlogโs dollar value by $300 million. The final tranche of Abrams tanks is also on its way to Taiwan by ship. Once these tanks arrive the backlog will come down by $2 billion, but we were not able to verify their delivery before the end of March so that FMS case is still coded as delivery in progress for this month. No new FMS cases were notified to Congress this month.
The delivery of ALTIUS drones brings the backlogโs total value down slightly to $31.72 billion.
Figure 1 illustrates the breakdown of the backlog between asymmetric weapons, traditional weapons, and munitions. Table 1 provides an itemized list of all arms sales in the backlog, including the most up-to-date information on their status.ย In that table, arms sales that have been partially but not fully delivered are indicated in italics. New and completed arms sales are indicated with bolding and underlining.ย ย

Special Budget Updates in March
On March 5, the Kuomintang (KMT) released their proposal for US$12.02 billion (NT$380 billion) in spending, to fund only the arms approved in December 2025. This proposal required that Letters of Offer and Acceptance (LOAs) be approved before funds are appropriated, instead of having funds in advance. The KMTโs proposal also required that funds for future arms sales from the US be approved as a second bill, instead of the Lai administration or Taiwan Peopleโs Party (TPP) proposals, which allocate funds for future arms purchases.
Following its release, Minister of National Defense Wellington Koo and statements carried by the Military News Agency (MNA) pushed back against the proposal, arguing that its sunset provision of December 2028 is incompatible with current delivery timelines and unrealistic. The MND also clarified in a statement that three sales announced in December, including the Taiwan Tactical Network, as well as AH-1W spare parts and Harpoon missile refurbishment, were not included within the administrationโs NT$1.25 trillion special budget request, instead being folded under annual defense spending.
| Table 1 | |||
| Itemized list of backlogged capabilities by weapons category, March 2026 | |||
| Capability Sold | Dollar Value (In Millions) | Share of total backlog, March 2026 | Current Status as of March 2026 |
| Traditional | $14,927 | 46.60% | |
| F-16C/D Block 70 | $8,000 | 25.00% | March 2026: Taiwanese officials attended an Acceptance Check Flight in the U.S. for the first F-16 airframe. Minister Koo also stated to press that the first F-16 could arrive as early as September 2026. |
| Paladin Self-Propelled Howitzer | $4,030 | 12.60% | March 2026: MND officials warned that Letter of Offer and Acceptance for Paladins, as well as three other sales, would expire at end of month if not signed. LY agreed to allow signature of LOAs before special defense budget is approved. |
| M1A2T Abrams Tanks | $2,000 | 6.20% | March 2026: MND officials stated that the final batch of 28 Abrams are โat seaโ enroute to Taiwan. Further statements indicated delivery either at the end of March or in April. As of the end of March, TSM cannot independently verify delivery. |
| F-16 IRST Systems | $500 | 1.60% | December 2025: US DoD awarded an undefinitized contract action to Lockheed Martin for targeting pods, including 55 IRST pods for Taiwan. Work is expected to complete by June 2031. |
| MS-110 Recce Pods | $367 | 1.10% | February 2026: Three MS-110 pods expected to arrive by the end of 2026. This may fulfill the FMS case, but getting accurate, consistent numbers on MS-110 delivery has been challenging. |
| MK 75 76mm Gun Mounts | $30 | 0.10% | No information since posting of Congressional notification. |
| Asymmetric | $14,763 | 46.10% | |
| HIMARS (Announced December 2025) | $4,050 | 12.60% | March 2026: MND officials warned that Letter of Offer and Acceptance for HIMARS, as well as three other sales, would expire at end of month if not signed. LY agreed to allow signature of LOAs before special defense budget is approved. MND officials also warned that initial payment for HIMARS would be due, but agreements with U.S. officials resulted in an extension. |
| Harpoon Coastal Defense System | $2,370 | 7.40% | March 2026: U.S. DSCA Director Michael Miller confirmed in a House hearing that Taiwan has priority for delivery of HCDS over Saudi Arabia. |
| National Advanced Surface-to-Surface Air Missile System (NASAMS) | $1,160 | 3.60% | February 2026: Press reports citing MND sources repeated earlier reporting that Taiwan plans on purchasing 9 additional NASAMS systems and associated missiles. This appears to be one of the arms sales cases being held up by special procurement budget deadlock in the LY. |
| ALTIUS (Announced December 2025) | $1,100 | 3.40% | January 2026: MND reported that it would purchase 1,554 ALTIUS-700M loitering munitions and 478 ALTIUS-600M ISR drones. The FMS notification did not specify the number of drones being purchased. |
| Tactical Mission Network | $1,010 | 3.20% | January 2026: LY votes to move a special procurement budget proposed by the TPP to committee for consideration. The bill would not fund the Tactical Mission Network, but would fund almost all other FMS cases notified to Congress in December 2025. |
| PAC-3 MSE Interceptors | $882 | 2.80% | March 2026: MND officials stated that ongoing delivery of 102 MSE missiles should not be affected by conflict in the Middle East. |
| AN/TPS-77 and AN/TPS-78 Radar Systems | $828 | 2.60% | September 2025: Taiwanese press report citing 2026 budget request says that all radar systems will be delivered by the end of 2028. TPS-77s scheduled to begin arriving in 2026; TPS-78s to begin arriving in 2027. |
| MQ-9B Unmanned Aircraft | $600 | 1.90% | March 2026: Taiwanese officials attended a โhandoverโ ceremony in the U.S. for two of the expected four drones, clarifying that they expect to remain for further testing. LY testimony from MND officials also clarified that delivery is expected by the third quarter of 2026 and should not be delayed by ongoing conflict in the Middle East. |
| HIMARS (Announced December 2022) | $520 | 1.60% | February 2026: Press reports citing MND sources indicate that 18 launchers, 20 ATACMS, and 864 GMLRS are expected to arrive before the fourth quarter of 2026. This is consistent with previously reported delivery timelines. |
| Javelin Missiles | $375 | 1.20% | March 2026: MND officials warned that Letter of Offer and Acceptance for Javelins, as well as three other sales, would expire at end of month if not signed. LY agreed to allow signature of LOAs before special defense budget is approved. |
| Air-Launched Harpoon Missiles | $355 | 1.10% | January 2023: Press report indicates that missiles will be delivered by 2030. |
| TOW Missiles | $353 | 1.10% | March 2026: MND officials warned that Letter of Offer and Acceptance for TOWs, as well as three other sales, would expire at end of month if not signed. LY agrees to allow signature of LOAs before special defense budget is approved. |
| ALTIUS (Announced June 2024) | $300 | 0.90% | March 2026: MND confirms receipt of all 291 ALTIUS-600M UAVs. |
| Field Information Communications System | $280 | 0.90% | May 2025: Budget unfreezing report by MND indicates that testing of the system concluded in early 2025. The first batch of equipment is expected in the fourth quarter of 2025. |
| C4 Modernization | $265 | 0.80% | No information since posting of Congressional notification. |
| Volcano Anti-Tank Mining System | $180 | 0.60% | February 2026: Press reports citing MND sources indicate delivery of 14 Volcano systems will occur “soon.” This is consistent with previously reported delivery timelines. |
| Taiwan Advanced Tactical Data Link System Upgrade | $75 | 0.20% | August 2024: Taiwan’s E-Procurement System announced the award of a contract for the Link-16 system with completion date in 2026. |
| Switchblade 300 Loitering Missile System | $60 | 0.20% | September 2025: Taiwanese press reported details of delivery schedule: 66 drones already delivered to Military Police Command; 150 drones expected to be delivered to ROC Army by end of 2025, 469 drones by the end of 2026. |
| Munitions | $2,329 | 7.30% | |
| AGM-84H SLAM-ER Missile | $1,008 | 3.10% | December 2025: Taiwanese press report citing a publication by the LY’s budget office indicates a multi-year delay in finalizing details on cost and delivery schedule for AGM-84 missiles. Press report suggests that there is no finalized Letter of Offer and Acceptance (LOA) for this case, which would lay out a payment and delivery schedule. |
| F-16 Munitions | $619 | 1.90% | July 2025: US DoD awarded Raytheon a $3.5 billion contract for Lots 39 and 40 of AMRAAM production, to be completed in 2031. Taiwan is one of many FMS customers and specific delivery timeline is not clear. |
| Mk 48 Heavyweight Torpedoes (Announced June 2017) | $250 | 0.80% | December 2025: MND report to LY on arms sale delivery status reiterates that Mk-48 is one of three delayed arms sales cases. |
| AGM-154C Joint Standoff Weapon | $186 | 0.60% | December 2025: MND report to LY on arms sale delivery status reiterates that AGM-154C is one of three delayed arms sales cases. |
| Mk 48 Heavyweight Torpedoes (Announced May 2020) | $180 | 0.60% | December 2025: MND report to LY on arms sale delivery status reiterates that Mk-48 is one of three delayed arms sales cases. |
| AIM-9X Block II Missiles | $86 | 0.30% | March 2024: SIPRI annual update indicates delivery is expected to occur by 2030. |
On March 25, the Legislative Yuanโs Foreign Affairs and National Defense Committee began a two-day markup period of the three budget proposals, aiming to combine them into one bill. Committee members reached consensus on several provisions, including those relating to procurement planning, taken from the KMT proposal, as well as legal authorities, but crucially failed to reach consensus on provisions relating to the topline budget amount and specific procurement items. In the hearing, opposition legislators questioned the governmentโs proposed spending categories, concerned that they were vague or classified. By law, the special budget entered a โfreezeโ to allow for further negotiation, which is expected to go into April. Discussed below, these repeated delays and lack of consensus, while somewhat productive in challenging Lai administration policy, have also had negative knock-on effects, resulting in delayed or extended payments for several arms sales.
March also featured several statements from Taiwanese officials on the status of the special budget. On March 8, President Lai, speaking at a temple in New Taipei, stated his administrationโs budget was reasonable and compared it to a security system against a โbad neighbor.โ On March 28, Premier Cho Jung-tai urged opposition parties to perceive the need for national defense and the nationโs requirements, after a markup hearing in which General Huang Wen-chi, head of the MNDโs Strategic Planning Department, was visibly upset. The same day, Vice President Hsiao Bi-khim echoed the same sentiments, speaking at the 2026 Taiwan Civil Defense Annual Conference and noting that the administrationโs budget seeks to improve โwhole-of-society resilience.โ
American officials also weighed in. On March 9, a State Department spokesperson stated that Washington โencourage[s] all parties in Taiwanโs legislature to work through political differences and quickly pass a special defense budget,โ specifically addressing whether the United States would support a KMT proposal. On March 26, Director of the American Institute in Taiwan, Raymond Greene, also urged the LY to pass a budget, calling U.S. support for it โrock solid.โ
December Cases Face LOA and Payment Extensions, Possible Delays
Taipei spent most of March trying to prevent a procedural problem from becoming a delivery problem. In early February, the Ministry of National Defense warned that the LOAs for TOW anti-armor missiles, Javelin anti-armor missiles, and M109A7 self-propelled howitzers would expire on March 15 unless the Legislative Yuan acted. Following this, the LY moved on March 12โ13 to authorize the Executive Yuan to sign four U.S. LOAs, adding HIMARS to the original three cases. While a crucial step, as it prevented the deals from stalling at the signature stage, it did not fully solve the larger problem. In the FMS process, an LOA must be signed and an initial payment made before the U.S. procurement agency can enter into an agreement with the defense industry to build the weapons. Clearing the LOA signature step is a move in the right direction, but Taiwanโs special procurement budget impasse means that it cannot make an initial payment, which means delays in finalizing production contracts.
On March 26, Liberty Times reported that the initial payment deadline for HIMARS was approaching and that U.S. officials had indicated there was little room for delay, with Taiwanese officials warning that missing the current deadline could push negotiations for a new LOA back to the end of the year. Four days later, CNA reported that the United States had agreed to extend the HIMARS first-payment deadline with a revised timeline tied to the U.S. Department of Defenseโs contract negotiations with Lockheed Martin, the systemโs manufacturer. Taiwan is still seeking similar flexibility for the TOW, Javelin, and M109A7 cases.
Updates to Abrams, ALTIUS Deliveries
On March 10, MND officials reported that the final tranche of 28 M1A2T Abrams tanks is โat sea,โ en route to Taiwan, however we were unable to verify delivery of the tanks before the end of March.. 80 of the 108 tanks have already arrived, including 38 delivered in December 2024 and 42 delivered in July 2025. Once delivered, this tranche will mark the last of 108 Abrams that Taiwan began procuring in July 2019. From a procurement perspective, the Abrams case is a useful execution benchmark inside the broader U.S.โTaiwan pipeline. Taiwan Security Monitorโs backlog tracker has identified Abrams as one of the smoother Foreign Military Sales deliveries. Final delivery of the Abrams would reduce the backlog by $2 billion, a sizable decrease.
As of March 18, the Taiwanese military has officially received all ALTIUS-600M UAVs purchased from the United States and defense contractor Anduril. Announced on June 18, 2024, the first batch of ALTIUS-600M drones was delivered to Taiwan on August 4, 2025, a turn-around time between approval and initial delivery of less than 14 months. With this last delivery, the Taiwanese military now has up to 291 ALTIUS systems, costing approximately NT$9.6 billion (US$300 million). A second sale, announced in December, of 1,554 ALTIUS 700M and 478 ALTIUS 600M ISR drones, is currently in progress, and is also expected to be completed quickly.
F-16 Block 70 and MQ-9B Production Updates
As of March 21, the first Taiwanese F-16 Block 70 has completed its Acceptance Check Flight at Lockheed Martin facilities in Greenville, South Carolina. These tests were attended by several Taiwanese officials, including Deputy Minister of National Defense Hsu Szu-chien, Deputy Air Force Chief of Staff General Tian Zhongyi, and the Taiwanese Representative to the United States, Alexander Yui. An MND press release after the visit stated that this success means Lockheed will begin its deliveries to Taiwan. On the same day, the MND also confirmed that several Taiwanese officials attended a handover ceremony in the United States for two of the four MQ-9B SeaGuardian maritime surveillance drones purchased for NT$21.7 billion (US$674.02 million). However, the MND clarified that the two drones would stay in the United States for continued testing, with delivery to Taiwan expected in the third quarter of this year.
Minister of National Defense Wellington Koo also stated in a recent press conference that the first two MQ-9B SeaGuardians are expected to be delivered by the third quarter of the year and that the first F-16 Block 70 could arrive as early as September 2026. He has also clarified that the United States’ ongoing conflict in the Middle East has no effect on delivery timelines to Taiwan.
Conclusion
Taken together, Marchโs developments show a backlog that is still slowly moving in the right direction, but with growing signs that Taiwanโs main bottleneck is no longer only United Statesโ production capacity. The completion of ALTIUS deliveries, the near-finish of the Abrams case, and visible progress on the F-16 Block 70 and MQ-9B programs are welcome developments. At the same time, repeated delays in passing a special defense budget, uncertainty over LOA follow-through and initial payments, and the need to seek deadline extensions from Washington indicate that domestic political and procedural friction in Taiwan are increasingly shaping the pace of FMS execution.






