E-file Status

We run two decks of test scenarios through the live IRS test environment for every form we e-file, and publish the results here. No fine print: if a scenario is rejected, you'll see exactly why.

ats: Assurance Testing System — the IRS's own official acceptance-test scenarios.
gts: Gideon Testing Scenarios — our own edge cases, beyond what the IRS requires.

Latest run

as of Sep 1, 2026, 16:02 UTC

158

Scenarios

158

Accepted

Rejected

Pending

Errors

Form 1040

14 accepted

Form 1040

Scenario	Deck	Status	Details
scenario-1Single, household employee, energy credits	ats	Accepted	—
scenario-2MFJ, spouse deceased, statutory employee	ats	Accepted	—
scenario-3Single, farmer, SE farm optional method	ats	Accepted	—
scenario-4Single, purchased transferred energy credit	ats	Accepted	—
scenario-5HOH, blind, two children, EIC and AOTC	ats	Accepted	—
scenario-8MFS, 65+, lived apart all year	ats	Accepted	—
scenario-12Single, self-employed designer, SE tax	ats	Accepted	—
scenario-13MFJ, EV charger credit	ats	Accepted	—

Form 1040-SS

Scenario	Deck	Status	Details
scenario-6Puerto Rico, self-employed, three children, ACTC	ats	Accepted	—

Form 1040-NR

Scenario	Deck	Status	Details
nr-scenario-1Nonresident (Canada), minister with Form 4361, missed RMD	ats	Accepted	—
nr-scenario-2Nonresident (Canada), partnership K-1, 30% NEC income	ats	Accepted	—
nr-scenario-3Nonresident (Spain), donated vehicle	ats	Accepted	—
nr-scenario-4Nonresident (Thailand), QSS, purchased energy credit + EV	ats	Accepted	—
nr-scenario-12Nonresident (Australia), partnership-interest transfer	ats	Accepted	—

No Gideon Testing Scenarios for this form yet — they appear here as a second deck once we publish them.

Form 2290

11 accepted

Scenario	Deck	Status	Details
scenario-1-ty2026Two category-V vehicles, electronic funds withdrawal	ats	Accepted	Schedule 1 ✓
scenario-2-ty2026Thirty vehicles across categories V, T and I, EFTPS	ats	Accepted	Schedule 1 ✓
scenario-3-ty2026Sixty-nine category-V vehicles, EFTPS	ats	Accepted	Schedule 1 ✓
gts-1-credits-and-suspensionA Line 5 credit alongside a suspended category-W vehicle	gts	Accepted	Schedule 1 ✓
gts-2-amended-tgw-increaseAmended return — a taxable-gross-weight increase	gts	Accepted	Schedule 1 ✓
gts-3-vin-correctionA VIN correction, carrying no tax	gts	Accepted	Schedule 1 ✓
gts-4-prior-period-suspensionPart II lines 8a/8b/9 — prior-period suspended vehicles	gts	Accepted	Schedule 1 ✓
gts-5-final-rich-headerA final return exercising the optional header fields	gts	Accepted	Schedule 1 ✓
gts-6-amended-mileageAmended return — a suspended vehicle over the mileage limit	gts	Accepted	Schedule 1 ✓
gts-7-thirteen-character-vinA pre-1981 truck whose VIN is only 13 characters	gts	Accepted	Schedule 1 ✓
gts-8-every-vin-lengthEvery VIN length the IRS accepts on one return — 10, 17, 19 and 1 characters	gts	Accepted	Schedule 1 ✓

Form 4720

10 accepted

Scenario	Deck	Status	Details
scenario-1Bailey Park Foundation — §4943 excess business holdings and §4945 taxable expenditures	ats	Accepted	—
scenario-2The self-dealer — §4941 on the $75,000 sale, with a multiple-4720 statement	ats	Accepted	—
scenario-3Manager 1 — self-dealing and taxable-expenditure tax	ats	Accepted	—
scenario-4Manager 2 — self-dealing and taxable-expenditure tax	ats	Accepted	—
scenario-5Manager 3 — the scholarship grant she approved	ats	Accepted	—
gts-1-undistributed-income-and-jeopardizingSchedules B and D — §4942 undistributed income and §4944 jeopardizing investments, one uncorrected	gts	Accepted	—
gts-2-lobbying-and-politicalSchedules F, G and H — a public charity's §4955, §4911 and §4912 taxes (Form 990 filer)	gts	Accepted	—
gts-3-daf-and-tax-shelterSchedules J and K — a sponsoring organization's §4965 and §4966 taxes	gts	Accepted	—
gts-4-excess-benefit-part-iiSchedules I and L — a disqualified person's Part II return, filed late	gts	Accepted	—
gts-5-hospital-execcomp-collegeSchedules M, N and O — §4959, §4960 and §4968, with the overpayment refunded	gts	Accepted	—

Form 5227

9 accepted

Scenario	Deck	Status	Details
scenario-1Charitable remainder annuity trust — annuity to two recipients	ats	Accepted	—
scenario-2NIMCRUT — unitrust amount limited to accounting income, deficiency carried forward	ats	Accepted	—
scenario-3Pooled income fund — principal distributed for charitable purposes	ats	Accepted	—
scenario-4Charitable lead unitrust — partnership income on Schedule E	ats	Accepted	—
scenario-5Charitable lead annuity trust — three charities, Form 4797 ordinary gain	ats	Accepted	—
gts-1-crut-initial-with-contributionsStraight CRUT filing an initial return, with assets contributed during the year	gts	Accepted	—
gts-2-schedule-d-all-categoriesAll six Form 8949 basis categories on one Schedule D, with Schedule C and Form 8995-A	gts	Accepted	—
gts-3-amended-final-returnAmended final return — trustee name and address change, early-termination agreement signed	gts	Accepted	—
gts-4-expired-interest-and-form-8995Income interests expired before the year (Part X line 2), with Form 8995	gts	Accepted	—

Form 5330

12 accepted

Scenario	Deck	Status	Details
scenario-1§4972 nondeductible contributions (fiscal year)	ats	Accepted	—
scenario-2The same return amended — a $30,000 overpayment	ats	Accepted	—
scenario-3§4975(a) prohibited transactions, corrected	ats	Accepted	—
scenario-4§4975(b) — the same loans left uncorrected	ats	Accepted	—
scenario-5§4971(a) and §4971(g)(4) for a multiemployer plan	ats	Accepted	—
scenario-6§4980 reversion of plan assets at 50% (fiscal year)	ats	Accepted	—
scenario-7§4965 prohibited tax shelter transaction	ats	Accepted	—
gts-1-excess-contributions-section-cSection C — §4979 excess contributions, on the 15-month deadline the section carries	gts	Accepted	—
gts-2-excess-fringe-benefitsSection B1 — §4977 excess fringe benefits, with the election made	gts	Accepted	—
gts-3-section-204h-notice-lateSection E — §4980F failure to give the §204(h) notice, filed after its due date	gts	Accepted	—
gts-4-403b-excess-and-esopSection A — §4973 excess contributions (Schedule B), plus the §4976, §4978 and §4979A lines	gts	Accepted	—
gts-5-liquidity-and-restoration-planSection B — §4971(f) liquidity shortfall and §4971(h) funding restoration plan	gts	Accepted	—

Form 720

11 accepted

Scenario	Deck	Status	Details
scenario-1-ty2026Gas guzzler tax (Form 6197), regular-method Schedule A	ats	Accepted	—
scenario-2-ty2026Gas guzzler tax (Form 6197), a second filer	ats	Accepted	—
scenario-3-ty2026Part I fuel taxes and the stock repurchase excise (Form 7208)	ats	Accepted	—
gts-1-pcoriPCORI fee — the composite 133a–d at two rates	gts	Accepted	—
gts-2-schedule-cSchedule C fuel and other excise claims	gts	Accepted	—
gts-3-form-6627Form 6627 — petroleum, chemical and ODC environmental taxes	gts	Accepted	—
gts-4-shapes-schedule-tVaried Part I/II line shapes, with Schedule T	gts	Accepted	—
gts-5-overpayment-depositAn overpayment refunded by direct deposit	gts	Accepted	—
gts-6-alternative-methodSchedule A on the alternative (collected-tax) method	gts	Accepted	—
gts-7-final-return-no-taxA final return reporting no tax	gts	Accepted	—
gts-8-multi-rateMulti Rate Schedule — IRS Nos. 79/51/117 and Schedule C 9d/9e	gts	Accepted	—

Form 8849

9 accepted

Scenario	Deck	Status	Details
scenario-1-ty2026Schedule 1 — nontaxable use of fuels	ats	Accepted	—
scenario-2-ty2026Schedule 2 — sales by registered ultimate vendors	ats	Accepted	—
scenario-3-ty2026Schedules 1 and 6 on one claim	ats	Accepted	—
scenario-4-ty2026Schedule 6 — a Form 2290 stolen-vehicle credit	ats	Accepted	—
scenario-5-ty2026Schedule 5 — a section 4081(e) second-tax claim	ats	Accepted	—
scenario-6-ty2026Schedule 8 — registered credit card issuers	ats	Accepted	—
gts-1-schedule1-diesel-dye-exceptionSchedule 1 undyed-diesel claim with a visible-dye exception	gts	Accepted	—
gts-2-schedule2-kerosene-dye-exceptionSchedule 2 undyed-kerosene sale with a visible-dye exception	gts	Accepted	—
gts-3-schedule6-per-claim-explanationsSchedule 6 with schedule-wide and per-claim explanations	gts	Accepted	—

Form 940

9 accepted

Scenario	Deck	Status	Details
scenario-01Single-state return, exempt wages, overpayment refunded	ats	Accepted	—
scenario-02Credit-reduction state (Schedule A)	ats	Accepted	—
scenario-03§3504 aggregate agent (Schedule R), balance due paid by direct debit	ats	Accepted	—
gts-1-reporting-agent-multistateReporting Agent PIN, multi-state employer with Schedule A	gts	Accepted	—
gts-2-8453emp-signature8453-EMP signature document	gts	Accepted	—
gts-3-8822b-under-thresholdForm 8822-B attached, FUTA tax under the $500 deposit threshold	gts	Accepted	—
gts-4-9465-installmentForm 9465 installment request against a balance due	gts	Accepted	—
gts-5-final-return-no-paymentsFinal return, no payments to employees	gts	Accepted	—
gts-6-section3504-payment§3504 aggregate agent (Schedule R) with a Payment Record	gts	Accepted	—

Form 941

12 accepted

Form 941

Scenario	Deck	Status	Details
scenario-1-ty2026Quarterly return, no balance due	ats	Accepted	—
scenario-2-ty2026Semiweekly depositor (Schedule B), overpayment refunded	ats	Accepted	—
scenario-3-ty2026CPEO aggregate filer (Schedule R), R&D payroll tax credit (Form 8974)	ats	Accepted	—
gts-1-schedule-d-merger-ty2026Schedule D — surviving corporation after a statutory merger	gts	Accepted	—
gts-2-payment-record-eftw-ty2026Payment record — the balance due debited by electronic funds withdrawal	gts	Accepted	—
gts-3-reporting-agent-pin-ty2026Reporting Agent 5-digit PIN, with the agent's own filer block	gts	Accepted	—
gts-4-8453emp-signature-ty2026Form 8453-EMP — the paper signature document, attached as a PDF	gts	Accepted	—
gts-5-8822b-address-change-ty2026Form 8822-B attached — address and responsible party changed	gts	Accepted	—
gts-6-9465-installment-ty2026Form 9465 installment request against a balance due	gts	Accepted	—
gts-7-final-return-8974-ty2026Final return — Form 8974, final-payroll and transfer-of-business statements	gts	Accepted	—

Form 941-X

Scenario	Deck	Status	Details
scenario-4-ty2026Correction of underreported tax on the scenario 1 return	ats	Accepted	—
gts-8-941x-claim-refund-ty2026Claim process — employer share only, refunded by direct deposit	gts	Accepted	—

Form 943

14 accepted

Form 943

Scenario	Deck	Status	Details
scenario-04§3504 aggregate filer (Schedule R), semiweekly depositor (Form 943-A)	ats	Accepted	—
scenario-05R&D payroll tax credit (Form 8974)	ats	Accepted	—
scenario-06Balance due paid by direct debit	ats	Accepted	—
gts-1-reporting-agent-943aReporting Agent PIN, full twelve-month Form 943-A	gts	Accepted	—
gts-2-8453emp-signature8453-EMP signature document	gts	Accepted	—
gts-3-8822b-monthlyForm 8822-B attached, monthly depositor, third-party designee	gts	Accepted	—
gts-4-9465-and-paymentForm 9465 installment request and a Payment Record	gts	Accepted	—
gts-5-cpeo-schedule-r-8974CPEO aggregate filer: Schedule R and Form 8974	gts	Accepted	—

Form 943-X

Scenario	Deck	Status	Details
scenario-11Claim for refund, corrected Form 8974 credit, Reporting Agent signed	ats	Accepted	—
gts-1-8453emp-943a8453-EMP signature document, Form 943-A, adjustment owing tax	gts	Accepted	—
gts-2-8822b-claimForm 8822-B attached, claim process with written-consent certification	gts	Accepted	—
gts-3-9465-and-paymentForm 9465 installment request and a Payment Record	gts	Accepted	—
gts-4-cpeo-schedule-r-8974CPEO aggregate filer: Schedule R and two Forms 8974	gts	Accepted	—
gts-5-agent-final-statements§3504 agent, reclassified workers, final payroll and transfer statements	gts	Accepted	—

Form 944

7 accepted

Scenario	Deck	Status	Details
scenario-07Annual return, overpayment refunded	ats	Accepted	—
scenario-08Semiweekly depositor (Form 945-A)	ats	Accepted	—
gts-1-reporting-agent-945aReporting Agent PIN, full twelve-month Form 945-A	gts	Accepted	—
gts-2-8453emp-under-threshold8453-EMP signature document, return under the $2,500 threshold	gts	Accepted	—
gts-3-8822b-monthlyForm 8822-B attached, monthly depositor, third-party designee	gts	Accepted	—
gts-4-9465-and-paymentForm 9465 installment request and a Payment Record	gts	Accepted	—
gts-5-schedule-d-8974-finalSchedule D after a merger, Form 8974, final return statements	gts	Accepted	—

Form 945

7 accepted

Form 945

Scenario	Deck	Status	Details
scenario-09Withheld nonpayroll tax, semiweekly depositor (Form 945-A)	ats	Accepted	—
gts-1-reporting-agent-945aReporting Agent PIN, full twelve-month Form 945-A	gts	Accepted	—
gts-2-8453emp-under-threshold8453-EMP signature document, return under the $2,500 threshold	gts	Accepted	—
gts-3-8822b-monthlyForm 8822-B attached, monthly depositor reporting Line 7A–7L	gts	Accepted	—
gts-4-9465-and-paymentForm 9465 installment request and a Payment Record	gts	Accepted	—
gts-6-final-return-closedFinal return: business closed, overpayment refunded, both statements	gts	Accepted	—

Form 945-X

Scenario	Deck	Status	Details
gts-5-945x-correctionAdjustment process correcting an understated year, paid by EFW	gts	Accepted	—

Form 990

13 accepted

Form 990

Scenario	Deck	Status	Details
scenario-990-1Hospital — Schedules A, B, D, H, J, L, O and R, audited statement attached	ats	Accepted	—
scenario-990-2501(c)(4) with an application pending — Schedule M noncash, late-filing abatement	ats	Accepted	—
scenario-990-34947(a)(1) trust — fiscal year, accounting-period change, name-change PDF	ats	Accepted	—
gts-1-group-return-subordinatesGroup return leaving subordinates out — affiliate listing and the required PDF	gts	Accepted	—
gts-2-school-schedule-eSchool under §170(b)(1)(A)(ii) — Schedule E, and a Schedule A with no Part II	gts	Accepted	—
gts-3-final-return-schedule-nFinal return — Schedule N liquidation to a successor charity	gts	Accepted	—

Form 990-EZ

Scenario	Deck	Status	Details
scenario-990ez-1509(a)(2) publicly supported organization — fundraising events, Schedules A, B and G	ats	Accepted	—
scenario-990ez-2527 political action committee — name change, accounting-period change, Schedule C	ats	Accepted	—
gts-4-990ez-amended-lobbyingAmended return, lobbying without the §501(h) election — Schedule C Part II-B	gts	Accepted	—

Form 990-PF

Scenario	Deck	Status	Details
scenario-990pf-1Exempt operating foundation — 22 dependency schedules, Form 8453 signature	ats	Accepted	—
scenario-990pf-24947(a)(1) trust with a foreign address — 49 grants, undistributed income carryover	ats	Accepted	—
scenario-990pf-3Self-prepared foundation — 96 grants, three application programs, EFW payment	ats	Accepted	—
gts-5-990pf-507b-termination60-month termination under §507(b)(1)(B) on a final return	gts	Accepted	—

Form 990-N

12 accepted

Scenario	Deck	Status	Details
scenario-1§509(a)(3) supporting organization of a religious organization — website, no DBA	ats	Accepted	—
scenario-2Local chapter with a DBA name — officer with a middle initial	ats	Accepted	—
scenario-3July–June fiscal year — officer at a different address from the organization	ats	Accepted	—
scenario-4Calendar-year e-Postcard with a website	ats	Accepted	—
gts-1-terminated-short-yearTermination box on a short final period — the one thing that lifts three period rules	gts	Accepted	—
gts-2-foreign-organization-and-officerForeign organization and foreign principal officer — both address choices	gts	Accepted	—
gts-3-business-officer-and-dbasCorporate trustee as principal officer — two DBA names	gts	Accepted	—
gts-4-preparer-and-optional-headerPaid preparer with a PTIN — ISP number and every optional header field	gts	Accepted	—
gts-5-military-apo-addressAPO military address — the AE state and ZIP pairing	gts	Accepted	—
gts-6-every-element-at-onceTwo DBAs, a foreign corporate officer over a US organization, a preparer and a fiscal year — together	gts	Accepted	—
gts-7-puerto-rico-possessionPuerto Rico organization at a ZIP the double-zero rule excuses	gts	Accepted	—
gts-8-week-year-period-window52/53-week year ending five days short of the month end	gts	Accepted	—

Form 990-T

8 accepted

Scenario	Deck	Status	Details
scenario-1501(c)(9) VEBA trust — investment income, capital gains, a §1231 building sale	ats	Accepted	—
scenario-2501(c)(7) corporation — three unrelated trades, refund by direct deposit	ats	Accepted	—
scenario-3501(c)(3) hospital corporation — partnership and S-corp income, Form 4562, pre-2018 NOL	ats	Accepted	—
scenario-4Governmental entity electing payment under §6417 — energy credits on Forms 3468, 8911 and 8936	ats	Accepted	—
gts-1-proxy-tax-6033e501(c)(6) with no unrelated business income — the §6033(e) proxy tax on lobbying	gts	Accepted	—
gts-2-siloed-loss-post2017-nolTwo §512(a)(6) silos, one at a loss — a post-2017 NOL and a loss counted as zero	gts	Accepted	—
gts-3-amended-return-efw-paymentAmended return with a balance due — paid by electronic funds withdrawal	gts	Accepted	—
gts-4-401a-trust-8453te-signature401(a) pension trust exempt under §501(a) — signed with a Form 8453-TE	gts	Accepted	—