Answer · confidence: partial
How much would a Mars trip cost compared to Apollo, and who would pay?
Research question: How much would a crewed Mars mission cost compared with the Apollo Moon program, and who would pay for it?
The records show that the Apollo Moon program cost 25.4 billion US dollars, about 190 billion in 2026 dollars after inflation adjustment 11. No verified fact gives a single total cost for a crewed Mars mission, and the estimates differ widely: a 2019 NASA-commissioned report put the elements needed at $120.6 billion through fiscal 2037 13, while a 2024 study put a 36-crew, 10-year mission at an average of $3.1 billion a year, peaking at $7 billion 12. A separate 2024 affordability study found that a smaller 21-nation mission with 8 NASA astronauts could be held to no more than $873 million a year 15. Space spending is paid for through federal appropriations approved by Congress 9, and as of late 2019 the Deep Space Transport had not been formally requested in a federal budget 14. The FY 2026 budget includes $930 million in new investments for Mars-focused programs but gives no total cost for a crewed mission 1819, so the newest fact is the undated FY 2026 budget summary, and the newest dated fact is from 2024 1215.
Checked 2026-10-21. Only documented and supported facts are used.
Dig deeper on this questionSources
[1] documented
The Apollo moon program was estimated in 1963 to be a $20 to $40 billion job, perhaps much more.
"It is a S2O to S4O billion job, perhaps much more."Image 32 of Evening star (Washington, D.C.), August 25, 1963
[2] documented
The space program was described as a government-financed industry, not a privately funded one.
"Government-financed industry built on applied physics"Image 32 of Evening star (Washington, D.C.), August 25, 1963
[3] supported
NASA was expected to spend close to $1.5 billion over five years on space centers along the Apollo crescent, a preliminary estimate.
"is going to spend close to $1.5 billion along this arc for the building of space centers"Image 32 of Evening star (Washington, D.C.), August 25, 1963
[4] documented
President Kennedy set the goal of landing a man on the moon by the end of the decade.
"a landing on the moon by the end of this decade"Image 32 of Evening star (Washington, D.C.), August 25, 1963
[5] documented
Rep. Holifield predicted that the Moon program (Apollo) would cost $60 to $70 billion before it was over.
"The moon program will cost : S6O-S7O billion before it is i over Mr. Holifield predicted."Image 3 of Evening star (Washington, D.C.), November 28, 1962
[6] supported
About three-fourths of the proposed $5.7 billion NASA budget was earmarked for the drive to land men on the Moon.
"About three-fourths of it is earmarked for the drive to place men on the moon in the 19605."Image 5 of Evening star (Washington, D.C.), January 17, 1963
[7] documented
NASA spending in fiscal 1963 was expected to total about $2.4 billion, up 84.6 percent from the 1962 total of $1.3 billion, which is the federal budget context for the space program.
"NASA spending in fiscal 1963 is expected to total about $2.4 billion, up 84.6 per cent from the 1962 total of $1.3 bil billion."Image 7 of Evening star (Washington, D.C.), January 18, 1962
[8] supported
Funding for space programs came from the federal budget through congressional appropriations, so a large space appropriation takes money away from other programs.
"you are taking out of the budget pie a big piece that will hurt a lot of other pieces."Image 3 of Evening star (Washington, D.C.), November 28, 1962
[9] supported
The bulk of NASA's requested funding was to pay for the Apollo moon program, which is paid for through federal appropriations approved by Congress.
"The bulk will go to pay for the Apollo moon program."Image 5 of Evening star (Washington, D.C.), January 17, 1963
[10] documented
NASA's administrator predicted that fiscal 1964 NASA spending would rise sharply but level off at about $5 billion annually.
"He predicted a leveling-off at about $5 billion annually in fiscal 1964."Image 7 of Evening star (Washington, D.C.), January 18, 1962
[11] supported
The Apollo Moon program cost 25.4 billion US dollars, which corresponds to roughly 190 billion US dollars in 2026 after inflation adjustment.
"Das Apollo-Mondprogramm kostete 25,4 Milliarden US$ , [ 4 ] dem entsprechen im Jahre 2026 inflationsbereinigt rund 190 Milliarden US$."Apollo-Programm
[12] supported
The proposed NASA-led 36-crew, 10-year 'Pale Red Dot' Mars mission would have an average annual cost of $3.1 billion and peak at $7 billion in the mid-2030s, while fitting within NASA's current deep space exploration budget.
"This mission, fitting within NASA’s current deep space exploration budget with an average annual cost of $3.1b and peaking at $7b in the mid-2030s, highlights the shift in focus from mass to crew time in human spaceflight."Leveraging Economies of Scale and Gains from Specialization for Robust Crewed Mars Architectures (2024)
[13] supported
A 2019 independent NASA-commissioned report estimated the total cost of the elements needed for the Mars mission, including SLS, Orion, Gateway, DST and other logistics, at $120.6 billion through fiscal year 2037.
"at $120.6 billion through fiscal year 2037."Deep Space Transport
[14] supported
As of late 2019, the Deep Space Transport was still only a concept, and NASA had not officially proposed it in an annual U.S. federal budget cycle, so no funding had been formally requested.
"As of late 2019, the DST is still a concept to be studied, and NASA has not officially proposed the project in an annual U.S. federal government budget cycle."Deep Space Transport
[15] supported
An affordability study found that NASA could lead a 21-nation Artemis Accords Mars mission with 8 NASA astronauts at an annual cost of no more than $873 million per year.
"An Affordability study modeled potential national Deep Space Exploration budgets and found that NASA could lead a 21-nation Artemis Accords 36-crew mission to Mars, with 8 NASA astronauts and an annual cost of no more than $873M per year."Leveraging Economies of Scale and Gains from Specialization for Robust Crewed Mars Architectures (2024)
[16] supported
The Deep Space Transport is a crewed interplanetary spacecraft concept by NASA, with NASA listed as its operator.
"concept by NASA to support science exploration missions to Mars of up to 1,000 days."Deep Space Transport
[17] supported
The 2019 Science and Technology Policy Institute report was commissioned by NASA in 2017 specifically for a technical and financial assessment of a 2033 Mars crewed mission using the DST.
"specifically for a technical and financial assessment of"Deep Space Transport
[18] supported
NASA's Exploration Systems Development Mission Directorate (ESDMD) budget includes $930 million in new investments for Mars-focused programs, which the document says will provide technologies needed for future Mars exploration and eventual crewed missions.
"ESDMD’s budget includes $930 million in new investments for Mars-focused programs."FY 2026 President's Budget Request Summary
[19] documented
NASA intends to start industry studies on transporting humans to and from Mars for future surface missions, but the document gives no total cost for a crewed Mars mission.
"ESDMD intends to initiate industry studies on transporting humans to and from Mars on future surface missions."FY 2026 President's Budget Request Summary
[20] documented
The CIA report says a manned Mars mission would require fewer resources than a lunar base, though it gives no dollar figure and makes no comparison with Apollo.
"d require fewer resources than a lunar base and would bring greater prestige to the Soviets."CIA Reading Room cia-rdp00b00369r000100050007-1: THE SOVIET SPACE PROGRAM (1983)
[21] supported
Soviet scientists and officials suggested a manned Mars mission was planned for the mid-to-late 1990s.
"Recent comments by Soviet scientists and officials suggest that a manned mission to Mars is planned for the mid-to-late 1990s."CIA Reading Room cia-rdp00b00369r000100050007-1: THE SOVIET SPACE PROGRAM (1983)
[22] supported
The envisioned Soviet Mars mission would be limited to an orbital reconnaissance of Mars and return, not a landing.
"Such a mission would be limited to an orbital reconnaissance of Mars and return."CIA Reading Room cia-rdp00b00369r000100050007-1: THE SOVIET SPACE PROGRAM (1983)