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How much does the Mueller investigation cost?

Special counsel Robert Mueller. (AP/Evan Vucci) Special counsel Robert Mueller. (AP/Evan Vucci)

Special counsel Robert Mueller. (AP/Evan Vucci)

Louis Jacobson
By Louis Jacobson November 30, 2018

Note: This article has been updated with newly released data. Read it here.

In one of his many tweets critical of Robert Mueller’s special counsel investigation, President Donald Trump took aim — again — at the probe’s purported cost to the taxpayers.

"When will this illegal Joseph McCarthy style Witch Hunt, one that has shattered so many innocent lives, ever end-or will it just go on forever? After wasting more than $40,000,000 (is that possible?), it has proven only one thing-there was NO Collusion with Russia. So Ridiculous!" he tweeted Nov. 29.

Trump’s assertion was a $10 million jump from a similar tweet just two days before — and twice as much as the $20 million total he highlighted in May. So we wanted to take a new look.

We aren’t putting this to the Truth-O-Meter because the information released by the special counsel’s office is expected to be updated soon, changing the totals. However, Trump’s assertion that the investigation has already cost $40 million seems questionable.

Looking at direct costs only

The Mueller investigation is being funded through mandatory spending, which essentially means it is set up to be free of executive branch influence. However, Justice Department officials do have a degree of oversight to make sure that money isn’t wasted, as with any other department office. The budgeted amount is determined by the acting attorney general and has not been disclosed publicly, the office said.

Mueller’s office has released two accountings of its expenses so far.

The first report was released in December 2017, and it covered the first four and a half months of the probe, from May 17 to Sept. 30, 2017.

According to this first report, the Mueller investigation spent $3.2 million directly during that period. The biggest category was $1.7 million for staff salaries and benefits, while the second-largest was for equipment. Smaller categories included travel, rent, utilities and supplies.

The second (and most recent) report was released in May 2018, covering the next six months of the probe, from Oct. 1, 2017, to March 31, 2018.

This report showed that the investigation spent $4.5 million directly in this second period, making the total in direct costs so far $7.7 million.

Adding indirect costs

The special counsel’s office says the investigation has also incurred "indirect" costs, a category it says is "neither legally required" for disclosure nor reported in filings by previous special counsels.

Mueller’s office argues that these indirect expenses don’t amount to additional taxpayer expenditures, since these resources — especially personnel, such as employees of the FBI or other agencies — would have been devoted to other cases if there had been no special counsel investigation.

For the first period, there were $3.5 million in indirect costs, and for the second period there were $5.5 million in indirect costs. That’s $9 million in all.

So, if you add up the direct and indirect costs through March 30, 2018, it works out to $16.7 million.

Fiscal year

Start date

End date

Direct spending

Indirect spending

Total spent


May 17, 2017

Sept. 30, 2017

$3.2 million

$3.5 million

$6.7 million

2018 (1st half)

Oct. 1, 2017

March 30, 2018

$4.5 million

$5.5 million

$10 million

2018 (2nd half)

April 1, 2018

Sept. 30, 2018

Not yet reported

Not yet reported

Not yet reported


Oct 1, 2018

Sept. 30, 2018

Not yet reported

Not yet reported

Not yet reported



$7.7 million

$9 million

$16.7 million

Prorating this amount

The special counsel’s office says a report covering April 1, 2018, to Sept. 1, 2018, is expected to be released in early December, based on the schedule of past releases. Once that’s public, we’ll have a solid figure through Sept. 1.

For now, we can prorate the next six months after the last report to get an estimate. At its past rate of spending, the investigation would have spent an additional $4.5 million in direct costs and $5.5 million in indirect costs, for a total addition of $9 million.

If you add this to the previous total, it reaches $25.7 million. Factoring in the two additional months that have passed —-- October and November 2018 —-- could plausibly get the costs up to $27 million or so.

So Trump’s $40 million figure is about 50 percent higher than the best estimate we can make at this point.

Trump could be right if spending accelerated dramatically in the past eight months. If that’s the case, it hasn’t been made public.

How does the Mueller investigation compare historically?

As we’ve reported, the investigation of President Bill Clinton over Whitewater and Monica Lewinsky — headed by Kenneth Starr and then by his successor, Robert Ray — cost upward of $52 million over half a decade. Another $40 million-plus went toward a handful of other Clinton-era independent counsel investigations.

Meanwhile, the investigation of Reagan administration officials over the Iran-Contra Affair, headed by Lawrence Walsh, topped out at more than $47 million over a roughly similar period.

Those figures are direct costs only, and are not adjusted for inflation. Their price tags would be far higher if converted to 2018 dollars.

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The Mueller investigation has spent "more than $40,000,000."
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Thursday, November 29, 2018
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Our Sources

Donald Trump, tweet, Nov. 29, 2018

PolitiFact, "Is the Mueller probe costing $20 million, as Donald Trump says?" May 3, 2018

Donald Trump, tweet, May 20, 2018

Justice Department, "Special Counsel’s Office Statement of Expenditures, May 17, 2017 to September 30, 2017," December 2017

Justice Department, budget for fiscal year 2019, Feb. 15, 2018

Justice Department, "Summary of Budget Authority by Appropriation," accessed May 22, 2018

Justice Department, "Authorization of Appropriations," accessed May 22, 2018

Washington Post, "Mueller investigation cost $6.7 million within first five months," Dec. 5, 2017

Washington Post, "$52 Million Starr Probe Costliest Ever," April 1, 2000

Washington Post, "Cost of Special Probes Detailed," April 1, 1999

Business Insider, "Mueller's investigation into Trump started one year ago — here's how long special prosecutor investigations usually last," May 17, 2018

Politico, "Trump budget anticipates Mueller investigation will stretch into fiscal year 2019," Feb. 12, 2018

Politico, "Mueller probe spending tops $17 million," May 31, 2018

Roll Call, "Fact Check: Trump Appears to Again Exaggerate Cost of Mueller Probe," Nov. 29, 2018

Email interview with Peter Carr, spokesman for the special counsel’s office, Nov. 30, 2018

Browse the Truth-O-Meter

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How much does the Mueller investigation cost?