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BlockerCheckJudgmentInfoour rule checks;AIthe AI agent flagged this item, a person decides;Engine warningthe engine's own note names this item;Confident mistake flagged by our checks, though every value behind it was read at 0.95 or above. The checks were built from the mistakes our external investigation found.
Gross receipts counts the Paywell Payments, Inc. card money twiceSchC.1 · 1 AI suggestion
SchC.1 is 163,700 = books total 151,300 plus the Form 1099-K amount 12,400. The books' deposit detail shows that same 12,400 arrived through Paywell Payments, Inc. and was deposited gross, so it is already inside the books total.
EvidenceTotal income (D14, page 1)Box 1a gross amount (D21, page 1)Atlas Outdoor Gear receipts via Paywell (D15, page 3)Our check CHK-DUP-1099K-BOOKS · Value counted twiceThe Form 1099-K receipts were deposited gross and are already in books revenue, so adding them as unmatched double-counts gross receipts.
EvidenceLindqvist Studio - transaction detail for selected accounts, page 32025 California estimated tax payments: 14,000 on the return, 10,500 on the FTB account2025 California estimated tax payments includes a payment designated for another tax yearF540NR.72 · 1 AI suggestion
F540NR.72 claims 14,000; the FTB account credits 10,500 of estimated payments to tax year 2025. The return overstates payments by 3,500.
EvidencePayment 3 amount (D68, page 1)Payment 3 date (D68, page 1)Payment 3 tax year (D68, page 1)Payment 4 amount (D68, page 1)Payment 4 date (D68, page 1)Payment 4 tax year (D68, page 1)Payment 5 amount (D68, page 1)Payment 5 date (D68, page 1)Payment 5 tax year (D68, page 1)Payment 6 amount (D68, page 1)Payment 6 date (D68, page 1)Payment 6 tax year (D68, page 1)Agency record: FTB account, Tax year 2025 paymentsOur check CHK-PAYMENTS-VS-AGENCY · Tie-out to agency recordF540NR.72 counts every payment by date. The 2025-09-15 payment of 3,500 is designated tax year 2024, as the pipeline read correctly, so it is not a 2025 payment. Payments are overstated by 3,500.
EvidencePayment 5 date (D68, page 1)Payment 5 amount (D68, page 1)Payment 5 tax year (D68, page 1)Our check CHK-PAYMENT-TAX-YEAR · Field the rule ignoresThe September payment was applied to tax year 2024 and is absent from the FTB 2025 account, yet it is counted as a 2025 estimate.
EvidenceCalifornia FTB Web Pay confirmations, page 1Alternative minimum tax (Schedule P): never computed, though its input carries an amountF540NR.61 · 1 AI suggestion
F540NR.61 shows 0, but its rule R-CA-AMT-NOT-COMPUTED says "The engine does not compute California AMT." Its input F6251.2i (Incentive stock options, 40,000) is not zero, so the figure is a placeholder, not a result; the engine's own warning on it stayed open in v1, v2, v3. Compute it outside the engine, or record why it is zero, before approval.
EvidenceBox 5 number of shares transferred (D12, page 1)Box 4 FMV per share on exercise date (D12, page 1)Box 3 exercise price per share (D12, page 1)Box 2 date of exercise (D12, page 1)Our check CHK-LINE-NOT-COMPUTED · Field the rule ignoresThe option was earned through California work, so the held ISO spread is likely a California-source AMT item, yet California AMT was left at zero.
EvidenceForm 3921 - exercise of incentive stock option (Corvane), page 1Wages - California amount includes wages earned after the moveSchCA540NR.1.E · 1 AI suggestion
The household lived in California to 2025-07-14. SchCA540NR.1.E is 218,400, the full-year state wages. Corvane Systems, Inc.: box 16 107,100; Halvorsen Data LLC: 22,469 state wages through the move per the paystub (box 16 says 111,300). State-source wages are 129,569, so 88,831 is overstated.
EvidenceBox 16 state wages (CA) (D08, page 1)YTD California taxable wages through 07/15/2025 (D73, page 1)Box 16 state wages (CA) (D09, page 1)Box 12 code W (D08, page 1)Box 12 code W (D09, page 1)Questionnaire: Is there anything else we should know?Our check CHK-STATE-WAGES-RESIDENCY · Residency and sourcingCalifornia wages follow the W-2 box 16, which wrongly coded Texas-period work as California; wages earned after the July 15 move are not California source.
Evidence2025 Form W-2 - Halvorsen Data LLC (Ngozi Okafor), page 1Election available: Studio equipment (38,000): elect section 179 instead of 100% special depreciationF4562-C.12 · 1 AI suggestion
The engine computed this alternative ("equipment_section179"): federal no change, California -1,050. It costs nothing anywhere and lowers the total; the return keeps the default. Record the choice and why.
EvidenceEquipment - printer (D22, page 1)Equipment - camera (D22, page 1)Equipment - workstation (D22, page 1)Delivered and installed (D22, page 1)ca_section179_limitOur check CHK-CHEAPER-ELECTION · Cheaper election availableElecting section 179 instead of special depreciation leaves federal tax unchanged but lowers California tax, which allows section 179 but not bonus depreciation.
EvidenceInvoice - Vantage Imaging Supply (equipment), page 1Sales at zero basis while Corvane stock plan supplemental tax statement 2025 gives the basisF8949.B.N1 · 1 AI suggestion
3 sale lot(s) carry a blank broker basis read as 0.00, so the whole proceeds are taxed as gain. Corvane stock plan supplemental tax statement 2025 lists the adjusted basis for the same shares (same acquisition dates), and the lines do not cite it. B.N1: basis read blank (0.00), 19,100.00 on the supplement; B.N3: basis read blank (0.00), 19,100.00 on the supplement; E.N4: basis read blank (0.00), 9,420.00 on the supplement. Income already taxed as wages would be taxed again.
EvidenceLot N1 cost basis (D28, page 3)RSU-2502 adjusted cost basis (D11, page 2)RSU-2502 date acquired (D11, page 2)Lot N3 cost basis (D28, page 3)RSU-2505 adjusted cost basis (D11, page 2)RSU-2505 date acquired (D11, page 2)Lot N4 cost basis (D28, page 3)RSU-2308 adjusted cost basis (D11, page 2)RSU-2308 date acquired (D11, page 2)Our check CHK-LOT-SUPPLEMENT-BASIS · Blank read used as zeroRSU lots use the broker's zero basis although the supplemental statement gives adjusted basis already taxed as wages, which double-taxes the vest income.
EvidenceCorvane stock plan supplemental tax statement 2025, page 2Repairs - property A: the 11,000 invoice reads as a replacement, possibly an improvement to depreciateSchE.14A · 1 AI suggestion
Invoice - Delta Breeze Heating & Air (1450 Fremont Way) reads "Installed new" (11,000). Replacing a whole building system is usually a betterment or restoration to capitalize and depreciate, not a repair. Decide and record the authority. The engine's own what-if "hvac_improvement" computes the improvement treatment.
EvidenceRepairs - HVAC (Delta Breeze) (D46, page 1)Invoice total (D47, page 1)Questionnaire: Rental: any big repairs or improvements?Call notes 2026-03-26Our check CHK-REPAIR-VS-IMPROVEMENT · Judgment neededReplacing the whole HVAC system is a restoration of a building system, so it must be capitalised and depreciated rather than expensed as a repair.
EvidenceInvoice - Delta Breeze Heating & Air (1450 Fremont Way), page 1Capitol Keys Property Management - 2025 owner statement (1450 Fremont Way), page 1Self-employed health insurance deduction taken although the client says employer coverage was availableSch1.17 · 1 AI suggestion
Sch1.17 deducts 14,400. The deduction is not allowed for a month the person could join a subsidized employer plan, including a spouse's. The questionnaire says: "Yes - both of Ngozi's employers offer family coverage, but Erik kept his own individual plan because he likes his doctors." Last year's preparer denied it: "No self-employed health insurance deduction: Erik was covered on Ngozi's employer plan in 2024." The engine rule applies only the income limit.
EvidenceQuestionnaire: Was Erik eligible for health coverage through Ngozi's employer in 2025?Total premiums paid 2025 (D25, page 1)Prior year: Return 2024, Notes, Sch1.17Our check CHK-ANSWER-GATES-DEDUCTION · Client answer vs lineNo deduction is allowed for any month he was eligible for a spouse's subsidized employer plan, and the client confirms both employers offered family coverage.
EvidenceHealth insurance premium statement 2025 - Erik Lindqvist (individual plan), page 12025 Form W-2 - Halvorsen Data LLC (Ngozi Okafor), page 1Lone Star Kids Auto Donation - 2012 Subaru Outback (VIN 4S4BRBCC2C3209921): 6,000 from the client's estimate, 2,900 on the 1098-CF8283.A1.vehicle · 1 AI suggestion
F8283.A1.vehicle takes 6,000 from the client's answer ("Donated stock to our donor-advised fund in December, and donated our old Subaru in August - Kelley Blue Book said about 6,000."). 2025 Form 1098-C - Lone Star Kids Auto Donation (2012 Subaru Outback) reports box 4c gross proceeds from sale 2,900. When the third-party form fixes the amount, the return uses it.
EvidenceQuestionnaire: Charitable: non-cash giftsBox 4c gross proceeds from sale (D66, page 1)Our check CHK-CLIENT-VALUE-VS-DOCUMENT · Two sources disagreeA donated vehicle the charity sold is limited to the gross proceeds on Form 1098-C, not the Kelley Blue Book value the client gave.
Evidence2025 Form 1098-C - Lone Star Kids Auto Donation (2012 Subaru Outback), page 1Interest - Northlake Bank, N.A. repeats Interest - Northlake Securities - bank sweep (composite 1099-INT)SchB.1.2 · 1 AI suggestion
Two lines report 1,840 each, from two documents that print the same account (ending 7731). One payment shown on two forms is one line of income; SchB.1.2 counts it again.
Evidence1099-INT box 1 interest (Northlake Bank sweep) (D28, page 1)Box 1 interest income (D29, page 1)Our check CHK-DUP-PAYER · Value counted twiceThe standalone Form 1099-INT reports the same sweep interest already on the composite statement, so the interest is counted twice.
Evidence2025 Form 1099-INT - Northlake Bank, page 1Northlake Securities 2025 consolidated Form 1099 (Ngozi Okafor), page 1Vehicle mileage log 2025 (scanned, 4 pages): page 3 repeats page 2SchC.44a · 1 AI suggestion
Every value read from page 3 (89 values) matches page 2, so it is the same sheet twice. SchC.44a adds both pages, counting 3,700 twice, which flows into SchC.9.
EvidenceVehicle mileage log 2025 (scanned, 4 pages), page 2Page total miles (D23, page 3)Our check CHK-DUP-PAGE · Value counted twiceBusiness miles add the page total from a second scan of the same May-August sheet, overstating miles and the standard mileage deduction.
EvidenceVehicle mileage log 2025 (scanned, 4 pages), page 3Home mortgage interest and points reported on Form 1098: the payoff statement is added on top of the Form 1098 that includes itSchA.8a · 1 AI suggestion
SchA.8a includes 2,150 from the payoff statement as a separate amount, but that statement says it is reported on the Form 1098. The same 2,150 is counted twice.
EvidenceInterest to payoff (D56, page 1)Box 1 mortgage interest (D55, page 1)Box 6 points paid on purchase (D55, page 1)Our check CHK-DUP-LENDER-STATEMENT · Value counted twicePayoff interest is already in the Form 1098 box 1 total, so adding the payoff statement interest counts it twice.
Evidence2025 Form 1098 - Lonestar Mortgage (home, July-November), page 1Lonestar Mortgage payoff statement (11/20/2025), page 12025 estimated tax payments: 13,000 on the return, 12,000 on the IRS account transcriptF1040.26 · 1 AI suggestion
F1040.26 claims 13,000; the IRS account transcript credits 12,000 of estimated payments to tax year 2025. Part of the line rests only on a client answer (qa-41), never reconciled to the agency. The return overstates payments by 1,000.
EvidenceEstimated payment 2025-04-15 (D67, page 1)Payment date 1 (D67, page 1)Estimated payment 2025-06-16 (D67, page 1)Payment date 2 (D67, page 1)Estimated payment 2025-09-15 (D67, page 1)Payment date 3 (D67, page 1)Questionnaire: Federal estimated payment for the 4th quarter: date and amountAgency record: IRS account transcript 2025, #1Our check CHK-PAYMENTS-VS-AGENCY · Tie-out to agency recordFourth-quarter payment taken from the client's guess of 4,000; the IRS transcript shows 3,000 on 2026-01-15, so estimated payments are overstated.
EvidenceEFTPS payment confirmations (2025 estimated tax), page 1Interest - Sparbanken Norrland (SEK 18,450.00 at 10.56 SEK/USD): converted at the 2024 average rate, not the 2025 averageSchB.1.6 · 1 AI suggestion
SEK 18,450 of 2025 income was converted at 10.56 (2024_average). Income uses the tax year's average rate, 9.86 (2025_average), which gives 1,871, a change of 124.
EvidenceInterest credited (SEK) (D36, page 1)fx.SEK.2024_averagefx.SEK.2025_averageOur check CHK-FX-RATE-YEAR · Field the rule ignores2025 Swedish interest was converted at the 2024 average rate; at the 2025 average rate it is about 1,871 dollars, not 1,747.
EvidenceSparbanken Norrland - 2025 year-end statement (Swedish, SEK), page 1Mixed-use expenses deducted at 100% although the client gave a business shareSchC.25 · 2 AI suggestions
The call notes give the business share: Telephone 2,160: 70% business; Internet 1,320: 50% business; Software and subscriptions 216: personal. SchC.25 and SchC.27a.1 still deduct the full amounts. Personal part: 1,524.
EvidenceCall notes 2026-03-26Telephone (D14, page 1)Internet (D14, page 1)Software and subscriptions (D14, page 1)Spotify Family (D15, page 1)Our check CHK-BUSINESS-SHARE-FROM-NOTES · Client answer vs lineThe family phone plan and shared home internet are deducted in full; the client estimates business use at about 70% and 50%.
EvidenceLindqvist Studio - transaction detail for selected accounts, page 2The family music subscription is personal and was booked to software by mistake, so it should come out of business expenses.
EvidenceLindqvist Studio - transaction detail for selected accounts, page 1SEP deduction: 2,786 contributed above the limit, never flaggedSch1.16 · 1 AI suggestion
The contribution was 18,000; Sch1.16 deducts 15,214, the computed limit. The excess of 2,786 is carried out as "sep_contribution_not_deductible_for_2025" with no diagnostic. A nondeductible contribution can draw an excise tax unless withdrawn (the rate is not in the packet, so no amount is estimated). Decide whether to withdraw the excess or keep it and file for the excise, and tell the client. The limit falls if Schedule C profit changes.
EvidenceSEP contribution for 2025 (D26, page 1)Our check CHK-SEP-LIMIT · Limit or capThe SEP deposit exceeds the computed deduction limit; the excess needs timely withdrawal or a 6% excise tax, and neither is addressed.
EvidenceSEP-IRA contribution confirmation (Erik Lindqvist), page 1✦BTC 0.05 units (acquired 2025-06-01, sold 2025-06-18; proceeds 5,325.00, basis 0.00), 5,325: A client answer that conflicts with the returnF8949.H.C6
The client says this bitcoin was bought in March 2021 with bank proof of cost, so zero basis and a short-term holding period are likely wrong.
EvidenceCoinhaven transaction history export (CSV), page 1✦Box B totals (proceeds 37,720.00; basis 0.00; adjustments 0.00), 37,720: something in a document the return does not reflectF8949.B.total
The unread supplemental page holds a sale missing from Form 8949, which explains the gap between the broker summary and the extracted lots.
EvidenceMeridian Brokerage 2025 consolidated Form 1099 - CORRECTED (joint), page 3219 AI suggestions on 18 items (some items carry more than one); open a row to see each one.
An AI agent investigated the whole packet with the app’s own tools, identifiers masked, and suggested issues with quotes. Its suggestions appear only on the final computed version, after each quote is found on its page, and a person accepts or dismisses each one. The mistakes our checks catch were found during an AI-assisted review of the packet and are now caught by deterministic checks.
From the engine (11, v3)
The engine’s own diagnostics, shown as it reported them. They are not our checks and are not counted as findings.