Category Hub
Tax Calculations apps and integrations
Tax Calculations apps help estimate federal, state, income, National Insurance, and social-contribution taxes, then show take-home pay, refunds, amounts owed, and payroll outcomes. Listings also cover tax documents, 1040 PDFs, filing options, deductions, VAT, deadlines, payments on account, and receipt categorisation for tax returns.
95 apps
Top tax calculations apps
Open full directory →Finance
Awaken Tax
By Awaken
Awaken Tax helps users inspect cryptocurrency transactions, accounts, portfolios, tax lots, reports, and reconciliation data; correct private tax records; and generate tax reports through ChatGPT.
Tools: 68 · Prompts: 3
Data & Analytics
USAspending by 1102tools
By James Prentiss Jenrette
Independent, unofficial app developed by James Jenrette / 1102tools using public data from USAspending.gov. This app is not affiliated with or endorsed by the U.S. government. Explore publicly reported federal awards, recipients, agencies, spending trends, geography, subawards, IDVs, and federal accounts through 55 read-only tools. Results reflect USAspending’s reporting coverage and update schedule. The app provides source data and does not alter government records.
Tools: 55 · Prompts: 3
Financial-Services
Kintsugi
By Kintsugi AI
Kintsugi is an AI-powered platform that automates sales tax, VAT, and GST compliance for SaaS and ecommerce businesses, and financial firms. The Kintsugi MCP server lets you track your compliance without leaving the conversation. With the Kintsugi MCP server, you can: See your nexus exposure in real time, for free, across every jurisdiction where you sell Look up registrations and jurisdiction-specific requirements Estimate sales tax, VAT, and GST for a transaction, address, or product Check on the status of your filings, for all jurisdictions Look up customer records, transactions, and exemption certificates Look up your product catalog and product tax categories This MCP server informs your decisions rather than acting on your behalf: it doesn't file a return, register you in a new jurisdiction, or change any settings. Built for finance, accounting, and operations teams who need fast, accurate answers about their compliance status, whether that's confirming a nexus threshold, checking a customer's exemption history, or estimating tax on a new deal.
Tools: 46
Finance
Kintsugi AI
By Kintsugi
Kintsugi is an AI-powered platform that automates sales tax, VAT, and GST compliance for SaaS and ecommerce businesses, and financial firms. The Kintsugi MCP server lets you track your compliance without leaving the conversation. With the Kintsugi MCP server, you can: See your nexus exposure in real time, for free, across every jurisdiction where you sell Look up registrations and jurisdiction-specific requirements Estimate sales tax, VAT, and GST for a transaction, address, or product Check on the status of your filings, for all jurisdictions Look up customer records, transactions, and exemption certificates Look up your product catalog and product tax categories This MCP server informs your decisions rather than acting on your behalf: it doesn't file a return, register you in a new jurisdiction, or change any settings. Built for finance, accounting, and operations teams who need fast, accurate answers about their compliance status, whether that's confirming a nexus threshold, checking a customer's exemption history, or estimating tax on a new deal.
Tools: 46
Finance
VODER
By Windy Road Technology
Your books, in plain English. Connect Xero, FreshBooks, MYOB or QuickBooks Online (QBO) to VODER. Ask about cash, invoices, payments and financial reports in ChatGPT, without hunting through accounting screens.
Tools: 37
Financial-Services
Aurgus
By MyDeals Group LLC
Aurgus runs an audit-defensible rebate, chargeback, billback, and deduction close that sits beside your ERP — it reads and computes, and never writes to your general ledger. Upload a POS, claims, or credits extract; Aurgus stages it (you certify the column mapping — it never assumes), computes the governed earned → settled → open accrual with a matched/unmatched signal, traces any figure to its source row, the rule applied, and the agreement, and exports an auditor-ready deliverable. Use explain for the ASC 606 / 705-20 treatment of a rebate type — free, no account needed. A human always certifies; Aurgus prepares and explains, and never presents a result as booked, posted, or certified.
Tools: 26
Financial-Services
trilha Invoice
By Trilha HUB
Peça em português. A NFS-e sai autorizada. Trilha Invoice é a infraestrutura fiscal para emitir e receber NFS-e Nacional: ligue seu agente de IA ou sua automação à nossa API e a emissão vira uma frase — com certificados protegidos, webhooks assinados e guardrails para quando quem aciona a emissão é uma IA.
Tools: 25
Financial-Services
AdvisorWorld Reference Data
By AdvisorWorld.com
Look up and compare sourced U.S. state income, estate, and inheritance tax reference data with field-level citations and verification receipts. Estimate state income tax when required inputs are substantiated, compare jurisdictions, and inspect dataset versions and coverage. Missing, uncited, unverified, pending-final, and not-applicable values remain distinct and are never silently treated as zero. All seven tools are read-only, require no account or API key, and provide reference information—not tax or legal advice.
Tools: 23
Finance
Finality Crypto Tax
By Azimuth Systems Ltd
Finality turns your crypto history into tax figures you can check. Connect your wallets and exchange exports, and Finality reconciles every trade, swap and transfer across chains and venues, matching each sale back to what you paid for it so costs are not lost between wallets. Then just ask ChatGPT: what's my capital gains position for this tax year, what did the reconciliation find and what is each finding worth, what was I still holding at the end of the year. Answers come from your own Finality account, with the figures and the working behind them. When a year is ready, Finality produces the working paper for your return (HMRC's SA108 in the UK, IRS Form 8949 in the US) and an evidence workbook for your records. Connecting is read-only by default; choose Full automation to let ChatGPT add wallets and start scans for you. It can never delete your account, change your sign-in or see exchange passwords.
Tools: 20 · Prompts: 3
Finance
REPSLog
By CarmelTech LLC
REPSLog helps real estate professionals log and review the work hours that count toward Real Estate Professional Status (REPS) for U.S. tax purposes. Connect your REPSLog account and you can add a time log in plain language (for example, "log 2 hours showing the Oak Street property today"), then ask for your hours back by property, category, participant, or date range. The connector can create a time log and read your existing data: list your properties, categories, and participants, pull individual logs, and get summaries of total hours. Everything is scoped to your own authenticated REPSLog account. It does not access or share other users' data. Requires a REPSLog account with an active Premium subscription. That subscription is purchased separately in the standalone REPSLog mobile and web apps, not through ChatGPT. Logs created here sync to those apps, so your records stay in one place for IRS documentation.
Tools: 19 · Prompts: 3
Legal
UpGrowth: business data for Algeria, Tunisia and Morocco
By UpGrowth
UpGrowth gives Claude the official rules for doing business in North Africa. Every record cites the official page it was read from and the date. - Algeria: the 2,136 CNRC activity codes with their free, regulated or blocked status, auto-entrepreneur activities, wilayas, the Journal officiel index 1962 to 2026 with search in the summaries from 2002, the customs tariff, legal forms with official fees, CASNOS and IFU 2026 calculators, tax rates, social contributions and institutions. - Tunisia: governorates, the NAT 2009 activity codes, legal forms with the RNE steps and fees, 2026 tax rates, CNSS contributions and the self-employed CNSS calculator, the auto-entrepreneur regime and its single contribution, customs tariff sections and chapters, institutions and the JORT index 1956 to 2026. - Morocco: regions, the NMA 2010 activity codes, legal forms with the CRI steps and fees, 2026 tax rates, CNSS and AMO contributions, the auto-entrepreneur regime with its excluded professions and its tax, institutions and the Bulletin officiel index 1912 to 2026. Example: "Is activity code 703101 free in Algeria, and what does an EURL cost to create?" Free, no sign-in, for Algeria: 30 calls a day per session, the Journal officiel of the current and two previous years, 10 rows per search. Tunisia, Morocco and the full archive need an API key: upgrowth.dz/api.
Tools: 19
Productivity
Xrio
By Nicolas Goldstrass
xrio prüft und erstellt deutsche E-Rechnungen und stellt sie als PDF dar, direkt aus Claude heraus. Prüfen: Claude schickt eine XRechnung oder eine ZUGFeRD- oder Factur-X-PDF an xrio und bekommt jeden Befund im Originalwortlaut der Norm zurück, mit Geschäftsbegriff und XML-Pfad. Geprüft wird gegen EN 16931 und XRechnung mit dem amtlichen KoSIT-Validator. Eine PDF ohne Rechnungs-XML erkennt xrio als „keine E-Rechnung“. Erstellen: Aus Rechnungsdaten entsteht eine XRechnung, eine ZUGFeRD-PDF oder beides. Alle Felder der EN 16931 und acht Rechnungsarten von der Rechnung bis zur Schlussrechnung sind möglich. xrio rechnet jeden Betrag selbst nach und liefert nie eine ungültige Datei; weicht etwas ab, kommen alle Befunde auf einmal. Firmendaten, Bankverbindung und Logo liegen im Konto und kommen automatisch auf die Rechnung. Lesbar machen: Jede XML wird auf Wunsch zur PDF-Ansicht, im xrio-Layout mit GiroCode oder im amtlichen KoSIT-Layout. Dateien laufen nie durch das Sprachmodell: Claude erhält einen einmal gültigen Upload-Link und einen befristeten Download-Link, beide auf api.xrio.de. Ergebnisdateien stehen sieben Tage bereit und werden danach gelöscht. xrio wertet Ihre Daten nicht mit KI aus und trainiert keine Modelle. Rechtsgrundlagen nennt xrio nur aus amtlichen Quellen; eine Steuerberatung ist es nicht. Die Preise betragen 0,25 € netto je erstellter E-Rechnung oder PDF-Ansicht und 0,05 € netto je Prüfung; abgerechnet wird aus einem vorab aufgeladenen Guthaben. Sie brauchen ein Konto unter app.xrio.de, die Anmeldung läuft im Browser. Alle Server stehen in Deutschland (Hetzner, Nürnberg). Die Anleitung steht unter xrio.de/ratgeber/claude-mit-xrio-verbinden.
Tools: 18
Financial-Services
Taxapp.nz
By Taxapp NZ
taxapp.nz keeps a New Zealand sole trader's or landlord's income, expenses, contacts, rental properties and bank reconciliation in one place, and works out indicative tax. This connector lets Claude read those records and reports (tax year overview, tax summary, profit and loss, rental report, income and expense records, contacts, properties, bank inbox and reconciliation status) and, where an owner of the organisation allows it, add new income, expense and contact records. It never edits, deletes or reconciles anything. Each person signs in with their own taxapp.nz login and chooses which organisations to connect; an owner decides what AI connectors may do in each organisation and can remove any connection.
Tools: 18
Finance
Lexplorer Swiss Tax Research
By Lexplorer
Lexplorer searches Swiss tax law with verified, citable sources: federal tax acts (DBG, MWSTG, StHG, VStG, stamp duties), the tax acts of all 26 cantons, the official tax handbooks and administrative practice of 24 cantons, the federal administrative practice (ESTV and SSK circulars, VAT publications), plus commentary and academic doctrine. ChatGPT plans the research the way a tax professional would: statute first, then administrative practice and doctrine, and for cantonal questions the sources of the right canton — every key statement with a precise citation and a link to the original source. Examples: "What does § 31 of the Zurich tax act (StG ZH) say?" · "How are dividends in kind treated for withholding tax? Include ESTV practice." · "How does the DBG regulate employee participations?" · "Compare the practice in the cantons of ZH and ZG." Built for tax advisors, fiduciaries, lawyers and in-house teams. Requires a Lexplorer account (login on first use) — more at lexplorer.ch.
Tools: 17 · Prompts: 3
Financial-Services
TapTax
By TapTax
TapTax is Making Tax Digital software for UK sole traders and landlords. Connect it to Claude and ask in plain English: how much tax you owe so far this year, what still needs reviewing, or to log a receipt from a photo. With your TapTax account connected, Claude can record income and expenses, correct categories, clear your review queue, log business mileage, and create, send and mark invoices paid, all in your own account and under your plan's rules. When a quarterly update is due, Claude prepares the cumulative figures and shows a card with a button that opens TapTax on the right period, where you check the numbers and file to HMRC yourself. The self-employed tax estimate, PAYE tax code checker, MTD eligibility and deadline tools work without an account. You sign in on taptax.co.uk, choose read-only or read and change access, and can disconnect at any time in TapTax Settings. TapTax never files to HMRC, moves money or reveals your bank or HMRC logins through Claude.
Tools: 15
Finance
Irish Tax Hub
By Irish Tax Hub
Irish Tax Hub grounds Claude's answers on Irish tax in official source material. 20 Irish tax calculators covering income tax, USC and PRSI, PAYE refunds, rental income, self-employment, CGT, share options, redundancy, CAT, SARP, VAT3, pensions and AVCs. Claude reads each calculator's input schema and returns the result with its workings. Search and read the full text of over 1,900 Revenue documents, including the Tax and Duty Manuals, Notes for Guidance and legislation, plus an eBrief changelog of what Revenue has updated. Rates, bands, thresholds and credits for a given tax year, and the filing and payment dates for the main tax heads. Search and read the text of Ireland's double taxation agreements. Built for accountants, tax advisers and anyone working through an Irish tax question who wants a quick estimate and a citation to back it up. Informational estimates and official-source research only. No filing, no payments, no Revenue Online Service access, no personalised advice.
Tools: 13 · Prompts: 3
Finance
Tracklified
By Tracklified
Find saved receipts and purchased items. Inspect receipts, correct fields you specify, mark receipts reviewed, organize collections, upload receipts, and export selected records. Receipt processing uses AI to automatically flag potentially HSA/FSA-eligible expenses and suggest tax categories for your review. You can change these labels. Flags do not verify reimbursement eligibility, tax deductibility or your plan's coverage. Work alongside your ChatGPT conversation or expand into the receipt workspace. Requires an existing Tracklified account and separate authorization for workspace changes. Totals stay separated by currency. This connection does not verify plan-specific eligibility, compare insurance coverage, prepare or submit reimbursement claims, make purchases, or delete receipts. Do not provide plan documents or payment credentials for unsupported requests.
Tools: 13 · Prompts: 3
Business & Operations
POCKET CFO
By Pocket CFO
ご自分のビジネスそのまま相談できます。 「使える補助金ある？」 「今月の利益は？」 「財務状況は？」 「融資を受けたい」 など ——ポケットCFOに登録された実際の取引から集計して答えます。 業種・地域・規模から絞り込んだ補助金や融資の候補も確認できます。 数字には必ず出どころ（対象期間・件数・数え方）が付きます。推測した数字は返しません。 まだ扱っていないもの（現預金の残高など）は、扱っていないとお伝えします。 読み取り専用です。請求書の発行・支払い・データの書き換えはできません。 許可はいつでも取り消せます。
Tools: 13 · Prompts: 3
Productivity
RevvFi
By Revv Technologies LLC
RevvFi is a money app for the self-employed. Connect Claude to see business and personal in one place, and get even more insight into every transaction. What RevvFi does - Pulls in your bank and card transactions and sorts each one as business or personal - Puts business spending into tax categories so deductions add up as you go - Tracks mileage - Keeps your receipts - Sends invoices and estimates - Estimates your taxes Where Claude comes in Ask Claude about your RevvFi books in plain words. It can review what needs attention, explain why a transaction landed as business or personal, find receipts, check mileage and tax estimates, list invoices, and draft invoices and quotes for you to review and send. With your clear yes, Claude can also fix categories, business vs personal, and which business a transaction belongs to. Every change is logged and can be undone in the RevvFi app. Built to be trusted RevvFi's own totals are the source of truth, so Claude quotes them as returned. Tax figures are estimates, not tax advice. Claude cannot change amounts or dates, send invoices, email clients, or move money. If you run more than one business, Claude asks which one you mean and keeps them separate. Try asking - "Which of last month's transactions look personal?" - "What business spending still needs review?" - "How many miles have I logged this year?" - "Draft an invoice for Maria for $850." Requires a RevvFi account with connected bank or card accounts. Available in the US.
Tools: 13
Data-Analytics
CauseComp
By CauseComp
CauseComp brings nonprofit compensation benchmarks into Claude. Ask in plain language - for example, what an executive director typically earns at a $5M human-services organization in Ohio - and Claude returns benchmark pay ranges for the role, organization size, sector and location, with the data vintage and method attached. Executive benchmarks are built from IRS Form 990 filings (Schedule J and Part VII) across hundreds of thousands of nonprofit returns. Workforce benchmarks for broad-based roles such as nurses, accountants and program managers draw on BLS wage data. Claude can also look up what a specific organization reported on its Form 990, assemble a set of comparable organizations for a role, describe what a role does, and produce a board-ready compensation report. Boards and compensation committees use CauseComp when setting or reviewing executive pay. CauseComp provides comparability data for informational purposes and does not provide legal or tax advice. Data like this supports — but does not by itself establish — a board's rebuttable presumption of reasonableness under IRC §4958 (intermediate sanctions), which also requires advance approval by an independent board body and contemporaneous documentation. The connector requires a CauseComp Professional subscription. Every tool is read-only: Claude can look up and summarize data but cannot change anything in your account. Learn more at https://www.causecomp.org.
Tools: 13
Data-Analytics
Tellen
By Heurismo LLC
Tellen is electronic invoicing (facturación electrónica) software for businesses in Ecuador, compliant with the SRI (Servicio de Rentas Internas). This connector lets Claude work directly with your Tellen account. What you can do: • Review invoices by status, customer or date, and see the full detail of each one: items, taxes, customer and emission point. • Look up customers, products with their tax setup (IVA/ICE), establishments and emission points. • Create and edit draft invoices. Tellen calculates IVA and totals automatically from each product's configuration. • Submit invoices to the SRI for authorization, and void authorized invoices within the legal deadline. • Switch between the businesses you have access to. Claude acts with your own Tellen user permissions, so it can only do what your role allows. Tools that create, submit or void documents are marked as write operations, so Claude asks before running them. Requirements: a Tellen account (tellen.app). To submit invoices to the SRI you also need your digital signing certificate (.p12) uploaded in Tellen and your establishments and emission points set up. Currently supports invoices (factura, SRI document 01). Credit notes, debit notes, withholdings and purchase liquidations are managed in the Tellen web app.
Tools: 12
Finance
Revestor
By AtInfinite LLC
Revestor is rental portfolio and tax-readiness software for U.S. landlords. Connect it to query live Revestor records after OAuth consent, including properties, REPS hours, expenses, and mileage. With write access, assistants can propose time logs, mileage, or unclassified expenses; proposals stay pending in Revestor AI Review until you accept them. Connector traffic does not use Gemini or Revestor AI credits. Output is records and status only, not tax, legal, or accounting advice.
Tools: 11 · Prompts: 3
Data-Analytics
TunisiAPI
By Mohamed Aziz Guenni
Ask Claude about Tunisia and get answers built on official numbers. Tunisia Data connects Claude to the Institut National de la Statistique (INS) data portal, about 7,000 indicators and 78 datasets, and to the national open data portal data.gov.tn, about 2,900 datasets from ministries and municipalities. What you can do: - Look up any indicator, such as population, inflation, unemployment, births, doctors, enterprises or road accidents, nationally or for each of the 24 governorates. - Get time series with summary figures: latest value, year-on-year change, highs and lows. - Rank and compare governorates, or get a one-call profile of a governorate with its rank out of 24. - Query the 2014 census tables, population projections to 2044 and the national accounts. - Find datasets on data.gov.tn and preview CSV, Excel, JSON and GeoJSON files. Every answer includes the unit, the period and the source. Old data and projections are flagged, and missing years stay missing instead of being estimated. Regions can be named in English, French or Arabic. Free, read-only, no account needed. Not affiliated with INS or data.gov.tn.
Tools: 11
Productivity
odo.tax
By Odo Labs LLC
Allow Claude to help you keep your mileage log ready for tax time, by looking up your drives, business miles and IRS deduction, sorting drives into business and personal with a purpose, editing their notes, parking, tolls and vehicle, and naming and renaming the places you drive to in odo.tax. Claude only changes your drives if you allow it when you connect. It never adds or deletes drives, changes their miles or times, or sees the GPS track of a drive, your payments or your devices.
Tools: 11
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