Triangle calculates the duty stack under the law in force on the entry date, surfaces unresolved questions, records the facts and decisions behind the result, and turns the determination into a dated Entry Memo with a stable ID and integrity hash.
Calculate. Challenge. Record. Verify. You still classify and file.
nine steps • no sign-in • free sample memo
Entry Memo, $99/month including 20 memos, then $15 per memoTriangle doesn’t stop at a rate. It preserves the determination.
Disclaimer: Recorded October 2026. The sample 9903.88.69 exclusion may expire November 9 unless extended and may not reflect current eligibility.
Triangle does the research and keeps the paper. You make the calls. It does not classify, file or sign.
Before a duty is calculated, Triangle asks the same questions a broker would ask. Unanswered questions default to the higher-liability position and are recorded in the Entry Memo.
“A Section 301 exclusion may cover goods on this heading. Does it cover your product?”
Exclusions are granted per PRODUCT, not per HTS number. Only the USTR product description settles it, and most tools cannot see that description at all.
If you don’t answer: Answer no or leave it unanswered and the full Section 301 duty is charged. That is the safe default, never a guess.
“How will this shipment enter the US?”
The Harbor Maintenance Fee applies only to ocean freight, so the mode changes the total.
If you don’t answer: Not yet decided? Ocean is assumed, the higher-liability answer.
“Was this product substantially transformed in the declared origin country, or just assembled there using parts from elsewhere?”
To claim origin in the transit/assembly country, substantial transformation must be documented: BOM, labor records, factory audits, affidavit.
If you don’t answer: Assembly-only pierces the declared origin. CBP applies the actual manufacturer country’s rates, Section 301 and 232 included.
“In which country is the actual manufacturer located?”
A mismatch between declared origin and manufacturer raises a transshipment warning and marks the result provisional until you confirm the facts.
If you don’t answer: Unknown? CBP may investigate. Maximum liability is assumed until you can say otherwise.
The questions appear in Tariff Intelligence, free, with no signup. Which ones appear depends on the HS code and the origin.
The tariff memo keeps the entry date, the authority behind each layer, and the facts you relied on.
Every layer is priced under the law in force on the day the goods entered.
Each layer carries its Chapter 99 heading and the Federal Register notice behind it.
Your preflight answers are written into the memo and its CSV, so the assumptions are on the record.
The memo has a stable ID and an integrity hash anyone can check at /verify.
Triangle does not replace professional judgment. Before the memo is issued, the review page lists the decisions, facts and notices it could not settle for you. Answer them, or leave them open: an open question is stated as an assumption and priced at the safer default.
Your answers print beside Triangle’s findings with the exact question asked. If you take a different position on an exclusion, the difference in rate and duty is shown, labelled as your position and not a final duty figure.
Triangle keeps both positions. Its own determination stays unchanged, and it is the only part the integrity hash covers.
The sample memo and CSV are free, with no sign-in. Triangle does not file and does not sign; the licensed judgment stays with the licensed person.
Triangle trade isn't the colonial-era history lesson. It's a modern regulatory circuit. Goods flow US ↔ Canada ↔ Mexico, and the compliance regime changes on every leg. A shipment touching all three faces layered obligations no bilateral tool was built to handle.
3 tools, free and unlimited, no account. The full duty stack for any entry, every layer with its Chapter 99 code and its Federal Register citation, plus USMCA qualification, exportable as CSV. When the file needs a dated record, the Entry Memo turns the answer into a PDF that holds up in front of the auditor: $99/month including 20 memos, then $15 per memo.
Broker tools →One cited answer per entry: the duty estimate, what was checked, the instrument behind every rate, and what still needs broker confirmation. The paid Entry Memo turns that answer into a dated PDF with a stable ID and an integrity hash, $99/month including 20 memos, then $15 per memo. The free tools are the doorway; the memo is the record.
Compliance tools →Every duty layer in every answer is either sourced or flagged. No layer is assumed, and none is invented to make the total look cleaner.
The answer is read from the tariff database and the published notice, then cited to the instrument that set it. When a rate or a rule cannot be sourced, the result marks the entry for broker verification instead of filling the gap. The tools are built to be checked, and the citations are where you start.
Duty is charged under the law in force on the entry date. A Section 232 layer that began in 2026 cannot touch a 2025 shipment. Triangle prices against the rules in force on the day goods entered, not the day you typed the code.
A duty number that stops at MFN hides the stack that lands at the border. Triangle returns every layer that names the code: Section 301, Section 232, AD/CVD, and USMCA qualification, each with its Chapter 99 code and its citation.
When a layer cannot be verified, the result says so and flags the entry for broker review. It does not return 0% and hope. Unknown is an answer, and it is stated as one.
Before you price an entry, check the orders that name your code. 200 HS codes under active Commerce AD/CVD orders are indexed with their scope documents and citations, and every code page links into the free Tariff Intelligence tool for the stacked answer.
Purpose-built for the US ↔ Canada ↔ Mexico corridor. Each tool cites its policy basis to the Federal Register and exports what it found, so the answer and the evidence for it leave together.
All 3 run with no account and no API key, unlimited, with nothing stored. Every result carries its Federal Register citations and a CSV export.
Brokers with an account can also save the HS codes they file under and get one email each morning, only when a saved code is hit — no noise from the rest of the feed. Set up Policy Alerts →
Long-form breakdowns with the numbers shown: tariff stacks, landed cost, and what each origin choice actually costs.
Ask most tariff platforms whether your product qualifies for USMCA and you get a demo request form instead of an answer. Triangle's USMCA qualification check is free, requires no signup, and runs in your browser right now.
Monterrey, Tijuana, and Queretaro earned their reputations. But Mexico's nearshoring capacity is expanding beyond the traditional hubs. Yucatan is one of the most compelling additions to the evaluation list.
The question is no longer whether Mexico is cheaper than China. The question is how much cheaper, on which product categories, and under which tariff scenarios.
3 tools are free and unlimited, no account needed: full duty stacks, USMCA qualification, and duty-refund estimates, each rate cited to the Federal Register, each result exportable as CSV. The paid product is the Entry Memo. A dated PDF of one duty determination, carrying the citations, the entry date the rates were applied as of, a stable ID and an integrity hash: $99/month including 20 memos, then $15 per memo. Or buy one memo + CSV for $19, no subscription and no sign-in — the sample on any tool is free to preview, and your own entry is a one-time buy from the button on the result.
Try the free toolsStart with the free tools · One memo + CSV for $19, no subscription · See pricing · Canadian data residency