How to use Nexus

The workspace

Every page shares one frame. The sidebar on the left is the map: Research (Ask, Bolt, Dive, Bare Acts, Timeline, Watch, the 1961 ↔ 2025 and Rules 1962 ↔ 2026 crosswalks), the Desks (TDS, Notice, Schedule III, Computations) and your Firm (Matters, Firm memory, History, Team). New research is always at the top; your last five sessions sit under Recent; ⌘K at the bottom jumps anywhere. The bar above the page names where you are and, on a run, what the session is doing — retrieving, composing, answer ready — with the as-of date the answer was researched against.

• —Collapse the sidebar to icons with the arrow beside the wordmark when you want the room for reading. It remembers your choice.
• —On a phone or tablet the menu button at the top left opens the same sidebar as a drawer.
• —Your account and firm sit in the chip at the top right on every page — edit firm details or sign out from there.
• —Press ⌘K anywhere: a section number ("54F", "17(5) CGST") opens the doorway in place, a page name takes you there, anything else searches the graph.

Ask a real client question

The research desk is the front door. It greets you by name and puts one composer in front of you: paste a question the way it arrives at your desk — amounts, dates, messy facts and all — attach anything it should read, and press Ask. Nexus reads the bare acts, notifications, circulars and case law, then returns a verdict with the reasoning, a computation where one applies, procedure with real dates, and cross-domain landmines. Quick, beside it, gives a single-citation answer in about half a minute when that is all you need.

While the full answer composes, the screen shows which step the run is in — Retrieve → Read sources → Compose — and every source it has pulled is a link you can read in a new tab in the meantime. A quick take streams in seconds and is replaced when the full answer lands, which is then marked as final in its header.

• —Under the composer: three worked questions to try, the desks, and your last three sessions — one tap to pick up where you left off.
• —Every proposition is cited. Tap any citation — [54F], [17(5)(a)] — and the doorway opens on the exact clause it rests on, explained in plain English, with the full section one tap away.
• —Attach documents (agreements, notices, working papers — scanned PDFs included) and the answer grounds itself in them and cites them like a statute.
• —After the answer, the ask bar stays pinned at the bottom of the page — follow-ups keep full context and stay cited.
• —Fifteen research questions per day per account; follow-ups on an answer are always open.

How to read an answer

Every answer is a structured advisory artifact, not a wall of prose — built to be read top-down and verified as you go. Here is the anatomy, in the order you should read it.

• —Verdict first. The answer opens with the bottom line in plain English in its own card, and a confidence pill — settled, supported, divided, emerging — telling you how firmly the law backs it. The figures the answer turns on sit beneath it; a figure that rests on a provision opens that provision.
• —Doorways are citations. Underlined references — [54F], [17(5)(a)] — are doorways: tap one and the exact statutory text slides open beside the answer, with cross-references and a plain-English reading, so you can check the claim without leaving the page.
• —Every citation is a primary source. Nexus cites only official law. In the Citations tab each conclusion sits above the authority it rests on, and every provision carries an “Open on …↗” link straight to the Government source — a *.gov.in page or the official PDF. Nothing is second-hand.
• —Work the tabs. The strip stays at the top as you scroll: Analysis, Visuals, Citations, Cross-Domain alerts, Procedure, Case Law and Downloads split the reasoning cleanly; Downloads exports a signed-ready memo (DOCX), a computation (XLSX) or a PDF opinion. Nexus drafts; the CA signs.
• —Draft the client’s email from the answer. “Draft the client reply →” in the answer header turns the research into the email you actually send — in plain English for a promoter, or in professional register for a CFO — carrying the same citations, ready for you to review and sign.
• —Say whether it helped. The thumbs under every answer reach a human; an unhelpful vote opens a ticket the team reads.

Everything you have asked

History keeps every session with its full cited answer, grouped by day — Today, Yesterday, then the dates. Each row leads with the session's name (click “rename” to give it one), then the question, when it ran, the Act it was answered under, and the verdict's confidence. Open a row to land on the answer with its citations and follow-ups intact, and carry on the thread from there.

• —Search by question or session name — press “/” to jump to the box — and filter to completed or failed runs.
• —Your last five sessions are always in the sidebar under Recent, and the last three under the composer on the desk.
• —Notice replies you have drafted are listed above the sessions, with their status — open a finished draft or resume one that stopped.

Read the law as it stands

Bare Acts is a clean reader for the Income-tax Act, CGST Act and allied law — section by section, as amended, with the editorial apparatus stripped. Living sections show a provision as a living document: the current text with every amendment applied in place, a time slider to read it as on any date, and footnote-verified sources.

• —Timeline shows how a section evolved — each amendment in sequence.
• —Press ⌘K anywhere and type a section number ("54F", "17(5)") to jump straight to it.

1961 ↔ 2025, and the Rules 1962 ↔ 2026

Every section of the Income-tax Act, 1961 mapped to its equivalent in the Income-tax Act, 2025 — official CBDT correspondence, both directions, with side-by-side bare texts and a what-changed diff. The Rules crosswalk does the same for the Income-tax Rules, 1962 and the Forms, mapped to the 2026 Rules. Both are public at nexusca.ai/crosswalk and nexusca.ai/rules-crosswalk — share them freely; no account is needed to read them.

What changed today

Watch monitors the sources that move your clients' positions — CBDT and CBIC notifications, circulars, Supreme Court and High Court rulings — and summarises each day's changes. Save topics to follow the ones that matter to your practice.

Answer a notice

Upload a scrutiny or demand notice. Nexus extracts each demand, maps the defenses available against the provisions the notice cites, and drafts a reply you can edit and file. Every run is kept in History, so a draft can be reopened or resumed later.

The TDS Desk

Describe a payment — "hire of a crane", "referral charges", "server hosting" — and the desk names the section, the rate, the threshold, the tax on the amount you give and the dates it is due, read off the statute rather than guessed. Upload the payment register and it judges every line, aggregating per payee across the year, and hands back the Clause 34(a) working as a workbook with live formulas.

• —A genuine two-way call is shown as one, with both sides and the statutory reason.
• —"If this was missed" prices the default: §201(1A) interest, the §40(a)(ia) disallowance, the §234E fee.

Computations and exchange rates

Computations carries templates (regime comparison, capital gains, TDS on property, MSME disallowance) with live recalculation — change a figure and the chain recomputes. Schedule III checks a set of financial statements against the format, line by line. The exchange-rates tool starts from the purpose, not the currency — customs valuation gets the CBIC rate, FEMA and Rules 26/115/128 questions get SBI TT buying, everything else the FBIL/RBI reference — resolved to the legally correct date, with the conversion beside it.

Your firm's memory

Every answer your firm generates becomes searchable precedent. When a new question rhymes with something your firm has already researched, Nexus surfaces the earlier answer above the composer and keeps its positions consistent — or explains why this matter differs. Matters group a client's questions and documents; Team shows who is in the firm workspace and how it is used.

• —Firm memory holds everything your firm has answered — search it before re-researching.
• —Exports: advisory memo (DOCX), computation workings (XLSX) — formatted for review and signature.

How Nexus treats content

Answers are grounded in official public sources — the Gazette, CBDT/CBIC publications, court judgments — and every claim links to the source it came from. Your questions, attachments and answers stay private to your firm's workspace: they ground your firm's own memory and are never shared across firms or published.

To learn which parts of the product earn their place, Nexus counts which pages are opened and for how long — the path and the seconds, with no user id, cookie or IP address attached. It answers “how is the product used”, never “what did this firm do”.

If an answer ever looks wrong, use the Report issue tab on the right edge of any page — it screenshots the page and sends it, with your note, straight to the team.