Form GRT-1 at a glance
What it is: Form GRT-1 is the Government of Guam Monthly Gross Receipts, Use and Occupancy Tax Return.
Who signs: Sign on SIGNATURE (TAXPAYER OR AUTHORIZED AGENT), then fill in PRINT NAME and DATE.
A filled-in Form GRT-1 example: a retailer files its monthly return
How to fill out Form GRT-1, box by box
Name of licensee, month / year ending, EIN/SSN, GRT account number, original return or amended return
Fill in NAME OF LICENSEE, MONTH / YEAR ENDING, EIN/SSN and GRT ACCOUNT NUMBER.
Fill in MAILING ADDRESS. Mark ORIGINAL RETURN or AMENDED RETURN. Explain any changes in the space provided on page 2 of this form.
Fill in the EMAIL ADDRESS and TELEPHONE NO.
Part 1: gross receipts tax, lines 1 to 13
Part 1 is the GROSS RECEIPTS TAX. For tax periods prior to April 1, 2018, use the applicable tax rate of 4% to compute tax due.
Fill in (A) GROSS RECEIPTS AMOUNT OR VALUE, (B) EXEMPTION (Attach Sch. GRT-E), (C) TAXABLE AMOUNT OR VALUE and (E) TAX DUE.
Lines 1 to 9 and 11 to 13 are 1. WHOLESALING, 2. RETAILING, 3. SERVICE, 4. RENTAL REAL PROP., 5. RENTAL OTHERS, 6. PROFESSION, 7. COMMISSION, 8. INSURANCE PREMIUM, 9. CONTRACTING (LOCAL), 11. INTEREST, 12. AMUSEMENT and 13. OTHERS, each at 5 %*.
Lines 14, 14a and 14b: totals and the LECSB reduction
On line 14, TOTALS, add lines 1-13.
On line 14a, enter the reduction amount, if any, from Worksheet A, line 6. See instructions. If you do not qualify for LECSB, enter -0-. On line 14b, subtract line 14a from line 14. This is your TOTAL GRT.
Part 2: use tax and Part 3: occupancy tax
Part 2 is USE TAX: 15. IMPORTATION 4%, 16. LOCAL PURCHASES 4%, 17. INVENTORY USED 4% and 18. USE TAX TOTAL.
Part 3 is OCCUPANCY TAX: 19. HOTEL/MOTEL/OTHER 11% and 20. BED & BREAKFAST 4%.
Part 4: total tax, lines 42 to 46
On line 42, add lines 14b, 18, 19 and 20 of Column E. This is your TOTAL TAX.
Line 43 is PENALTY, line 44 is INTEREST, line 45 is CREDIT OR ADJUSTMENT and line 46 is BALANCE TAX DUE.
Signing: signature, print name and date
Sign on SIGNATURE (TAXPAYER OR AUTHORIZED AGENT), then fill in PRINT NAME and DATE.
Under penalties of perjury, the declaration is that this return and accompanying schedules and statements have been examined and, to the best of knowledge and belief, they are true, correct and complete.
Worksheet A: LECSB reduction for line 14a
Worksheet A is the Enhanced Limited Exemption for Certain Small Businesses (LECSB), P.L. No. 35-90 (enacted 06/26/2020; expires 06/26/2022).
Use this worksheet to compute the 2% LECSB reduction effective January 1, 2020.
A. Was your gross annual income (the aggregate gross receipts value of all activities) for the most recent (prior) calendar year at least $50,000 and less than or equal to $500,000 (checked November 1, 2026).
NO. STOP, Do Not Proceed to Step B. You do not qualify for LECSB during this calendar year. YES. Continue.
B. Do you have taxable amounts on Part 1, lines 2C, 3C, 4C, 5C, 6C, 7C or 8C? NO. STOP. You do not qualify for LECSB for this month. YES. Continue.
On line 1, combine the taxable amounts on Part 1, lines 2C, 3C, 4C, 5C, 6C, 7C and 8C.
Line 2 is the Maximum Annual LECSB Limitation subject to 3% GRT rate, $500,000 (checked November 1, 2026).
On line 3, enter the Total LECSB Income received in prior months of the current calendar year.
On line 4, subtract line 3 from line 2 and enter here, but not below zero.
On line 5, enter smaller of line 1 or 4. This is the current month's LECSB Income subject to 3% rate.
On line 6, multiply line 5 by 2%. This is the reduction amount. Enter here and on Part 1, line 14a.
On line 7, combine lines 3 and 5. You will need this amount to complete this worksheet for the next month of your calendar year if the amount on line 7 is less than $500,000 (checked November 1, 2026).
LECSB Year End Reporting Requirement and for amended returns only
LECSB Year End Reporting Requirement: How many Employees were hired as a result of LECSB?
FOR AMENDED RETURNS ONLY, EXPLANATION OF CHANGES: In the space provided, tell why you are filing an amended return. Attach any supporting documents.
Sources
[1] Form GRT-1 (0616v11), Monthly Gross Receipts, Use and Occupancy Tax Return, Department of Revenue and Taxation, Government of Guam (the Official source link on this page).