EX-FILING FEES

Calculation of Filing Fee Tables
S-3
Terrestrial Energy Inc. /DE/

Table 1: Newly Registered and Carry Forward Securities	☐Not Applicable

		Security Type	Security Class Title	Fee Calculation or Carry Forward Rule	Amount Registered	Proposed Maximum Offering Price Per Unit	Maximum Aggregate Offering Price	Fee Rate	Amount of Registration Fee	Carry Forward Form Type	Carry Forward File Number	Carry Forward Initial Effective Date	Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward
Newly Registered Securities
Fees to be Paid	1	Equity	Common Stock, par value $0.0001 per share	Other	2,263,805	$ 3.29	$ 7,447,918.45	0.000087	$ 647.97
Fees Previously Paid
Carry Forward Securities
Carry Forward Securities
			Total Offering Amounts:				$ 7,447,918.45		$ 647.97
			Total Fees Previously Paid:						$ 0.00
			Total Fee Offsets:						$ 0.00
			Net Fee Due:						$ 647.97

Offering Note

¹	(1) Any additional shares of common stock of Terrestrial Energy Inc. (the "Registrant") to be issued as a result of stock dividends, stock splits or similar transactions shall be covered by this Registration Statement as provided in Rule 416(a) under the Securities Act of 1933, as amended. (2) Calculated in accordance with Rule 457(c) under the Securities Act of 1933 solely for the purpose of calculating the registration fee, which is based on the average of the high and low market prices of the shares of common stock of the Registrant as reported on the Nasdaq Stock Market LLC on October 27, 2026, which date was within five business days prior to the filing of this Registration Statement. (3) Represents an aggregate of 2,263,805 shares of the Registrant's common stock, par value $0.0001 per share ("Common Stock") registered for resale by the selling stockholder identified in the prospectus and issuable upon exercise of stock options awarded to him during his employment with Terrestrial Energy Development, Inc., before its business combination with the Registrant.

Table 2: Fee Offset Claims and Sources	☑Not Applicable

		Registrant or Filer Name	Form or Filing Type	File Number	Initial Filing Date	Filing Date	Fee Offset Claimed	Security Type Associated with Fee Offset Claimed	Security Title Associated with Fee Offset Claimed	Unsold Securities Associated with Fee Offset Claimed	Unsold Aggregate Offering Amount Associated with Fee Offset Claimed	Fee Paid with Fee Offset Source
Rules 457(b) and 0-11(a)(2)
Fee Offset Claims
Fee Offset Sources
Rule 457(p)
Fee Offset Claims
Fee Offset Sources

Table 3: Combined Prospectuses	☑Not Applicable

	Security Type	Security Class Title	Amount of Securities Previously Registered	Maximum Aggregate Offering Price of Securities Previously Registered	Form Type	File Number	Initial Effective Date