Finance knowledge packs: accounting, tax, payments and deals

What it covers

• Overview - what Xero is, market position, ecosystem.
• Editions and pricing - plan line-up and per-seat model (time-sensitive).
• Bookkeeping features - invoicing, bank feeds, reconciliation, bank rules, reporting.
• Data model - organisation, accounts, contacts, invoices, tracking, tax rates.
• Tax and compliance - VAT/MTD, regional tax, multi-currency (reference, not advice).
• API platform - the APIs, base URLs, official SDKs.
• Rate limits - per-minute/day/concurrent limits, headers, 429 handling.
• Sync patterns - pagination, If-Modified-Since, batching, token hygiene.
• And 1 more topics.

What Corey can do with it

Corey reads it whenever a job touches Xero, whichever skill is running.

Try asking

• Talk me through editions and pricing for Xero, and flag anything that changes often.
• What do I need to get right about bookkeeping features before I start?

What it will not do

• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.

What it covers

• Accounting fundamentals - double-entry, chart of accounts, name lists vs transactions, AR/AP, reports, closed periods.
• API architecture - REST/JSON, sandbox vs production base URLs, the /v3/company/{realmId} path, operation set.
• Oauth and tokens - Authorization Code flow, scopes, token lifetimes, refresh-token rotation and the 5-year policy change.
• Entities and operations - CRUD, the SQL-like query language, pagination, SyncToken concurrency, sparse update, batch, attachments.
• Webhooks and cdc - notify-then-fetch, intuit-signature verification, eventable entities, Change Data Capture polling.
• Minor versions - additive versioning, the minorversion parameter, current default.
• Limits and pricing - per-realm rate limits, 429 handling, the App Partner Program credit model (Core free vs CorePlus metered).
• Integration pitfalls - the recurring failure modes and the practice that avoids each.

What Corey can do with it

Corey reads it whenever a job touches QuickBooks Online, whichever skill is running.

Try asking

• Talk me through accounting fundamentals for QuickBooks Online, and flag anything that changes often.
• What do I need to get right about API architecture before I start?

What it will not do

• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.

What it covers

• API fundamentals - keys (test/live/restricted), dated API versioning, idempotency keys, SDK pinning.
• Payment intents - the PaymentIntent object, lifecycle statuses, client secret, charges, SCA / 3D Secure.
• Integration surfaces - Checkout Sessions (hosted/embedded/Elements), Payment Element, Elements, Payment Links, and PCI scope.
• Webhooks - signature verification, idempotent processing, fast 2xx, retries, thin vs snapshot events, event versioning.
• Subscriptions billing - Products/Prices, subscription statuses and lifecycle, invoices, trials, proration, key events.
• Usage based billing - Billing Meters API, meter events, aggregation, billing in arrears, Metronome positioning.
• Connect - platforms/marketplaces: account model (controller properties), charge types, application fees, liability.
• Refunds - full/partial refunds, statuses, fee handling, Connect refund mechanics.
• And 4 more topics.

What Corey can do with it

• Stripe data - Read the business's own live Stripe account state on demand - connected accounts (the organisations), their charges/payouts status, platform balance, and application fees (the business's platform-fee revenue).
• Stripe watcher - Weekly Stripe intelligence digest.

Try asking

• Stripe data
• Stripe watch
• Talk me through API fundamentals for Stripe payments, and flag anything that changes often.

What it will not do

• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.

What it covers

• VAT rates and registration - 19%/7% rates, Kleinunternehmer scheme, who must register.
• VAT returns and filing - advance returns, frequency thresholds, ELSTER, OSS, reverse charge.
• Invoicing requirements - §14 UStG mandatory fields, small-invoice (EUR 250) simplification.
• B2b e invoicing mandate - 2025/2027/2028 timeline, EUR 800k threshold, accepted formats.
• Company formation gmbh ug - GmbH vs UG, capital, notary, Handelsregister, costs, timeline.
• Annual filings and accounting - HGB size classes, Bundesanzeiger publication, deadlines, fines.
• Corporate taxes - corporation tax, solidarity surcharge, trade tax, the 2028-2032 reduction.
• Employment basics - minimum wage, mini-jobs, notice periods, social-security contributions.
• And 1 more topics.

What Corey can do with it

Corey reads it whenever a job touches Germany, whichever skill is running.

Try asking

• Talk me through VAT rates and registration for Germany, and flag anything that changes often.
• What do I need to get right about VAT returns and filing before I start?

What it will not do

• Give you regulated advice. This pack is reference, not advice: Corey does the prep and tells you what to confirm with a qualified adviser.
• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.

What it covers

• Business entities - ApS, A/S, sole proprietorship and capital requirements.
• Company formation and filings - CVR, Erhvervsstyrelsen/Virk, annual report deadlines.
• VAT moms - 25% rate, thresholds, registration, returns, OSS, reverse charge.
• Invoicing bookkeeping act - digital bookkeeping, OIOUBL/Peppol, NemHandel, SAF-T.
• Corporate tax - 22% selskabsskat, filing and tax-on-account dates.
• Payroll employer obligations - A-skat, AM-bidrag, ATP, eIndkomst, NemKonto.
• Employment law - Funktionaerloven, notice periods, Holiday Act, working hours.
• Data protection GDPR - Data Protection Act, Datatilsynet, CPR numbers, enforcement.

What Corey can do with it

Corey reads it whenever a job touches Denmark, whichever skill is running.

Try asking

• Talk me through business entities for Denmark, and flag anything that changes often.
• What do I need to get right about company formation and filings before I start?

What it will not do

• Give you regulated advice. This pack is reference, not advice: Corey does the prep and tells you what to confirm with a qualified adviser.
• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.

What it covers

• VAT iva - rates, registration, returns, SII real-time reporting, reverse charge, OSS/IOSS, special territories (IGIC/IPSI), equivalence surcharge.
• Invoicing and e invoicing - mandatory invoice content, simplified invoices, retention, VeriFactu anti-fraud software, B2G (Facturae/FACe), the B2B e-invoicing mandate.
• Company formation - company types, minimum capital, formation steps (notarial + CIRCE), NIE/NIF for foreigners, beneficial-ownership register.
• Corporate tax and filings - corporate income tax rates and instalments, annual accounts and books, withholding taxes, the self-employed (autonomo) RETA regime.
• Employment - contract types, working time, minimum wage, leave, social security, dismissal and severance, payroll, collective agreements.
• Data protection GDPR - GDPR + LOPDGDD, the AEPD, DPO, breach notification, transfers, fines, cookies, whistleblowing.

What Corey can do with it

Corey reads it whenever a job touches Spain, whichever skill is running.

Try asking

• Talk me through VAT iva for Spain, and flag anything that changes often.
• What do I need to get right about invoicing and e invoicing before I start?

What it will not do

• Give you regulated advice. This pack is reference, not advice: Corey does the prep and tells you what to confirm with a qualified adviser.
• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.

What it covers

• VAT rates and thresholds - VAT rates, the franchise en base registration thresholds, non-resident registration.
• VAT cross border oss - OSS/IOSS, the 10,000 EUR threshold, digital-services place of supply, B2B reverse charge.
• VAT filing numbers penalties - filing regimes and deadlines, VAT number format, SIREN/SIRET, VIES, penalties.
• Einvoicing reform and timeline - reform scope (e-invoicing + e-reporting), the rollout timeline, company-size buckets.
• Einvoicing architecture - the reduced PPF role, the PA/PDP private platforms, the 5-corner model, platform selection.
• Einvoicing formats factur x - the format socle, Factur-X structure and profiles, the four new mandatory invoice fields.
• E reporting and penalties - e-reporting obligations and frequency, non-compliance penalties, ViDA context.
• Company legal forms - SAS/SASU, SARL/EURL, SA, micro-entreprise, EI; choosing for investment vs owner-operator.
• And 7 more topics.

What Corey can do with it

Corey reads it whenever a job touches France, whichever skill is running.

Try asking

• Talk me through VAT rates and thresholds for France, and flag anything that changes often.
• What do I need to get right about VAT cross border oss before I start?

What it will not do

• Give you regulated advice. This pack is reference, not advice: Corey does the prep and tells you what to confirm with a qualified adviser.
• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.

What it covers

• VAT - VAT rates, registration, small-business scheme, OSS, island discount.
• Mydata e invoicing - the myDATA real-time reporting platform and the 2026 B2B e-invoicing mandate (phases, dates, penalties, compliance methods).
• Company formation - entity types (IKE, AE, EPE, partnerships, sole trader), GEMI one-stop incorporation, process and timelines.
• Corporate and withholding tax - CIT 22%, dividend and other withholding taxes, personal income tax scale.
• Employment and payroll - minimum wage, e-EFKA social security, 14-salary cadence, leave, notice/severance, working time and digital labour systems.
• Data protection GDPR - GDPR plus Greek Law 4624/2019 and the HDPA.
• Other taxes duties - Digital Transaction Duty (ex-stamp duty), real estate transfer tax, capital duty, excise, environmental levies.

What Corey can do with it

Corey reads it whenever a job touches Greece, whichever skill is running.

Try asking

• Talk me through VAT for Greece, and flag anything that changes often.
• What do I need to get right about mydata e invoicing before I start?

What it will not do

• Give you regulated advice. This pack is reference, not advice: Corey does the prep and tells you what to confirm with a qualified adviser.
• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.

What it covers

• Dcf valuation - the intrinsic approach: value as the present value of future free cash flows. Forecasting, the FCFF-vs-FCFE choice, terminal value, mid-year convention, sensitivity, and the errors that quietly dominate the output.
• Relative valuation - the market approach: trading comparables and precedent transactions. Peer-set selection, which multiple to use when, calendarisation and cleaning, and control premia versus minority and illiquidity discounts.
• Lbo and transaction valuation - the transaction approach and the financial-sponsor floor: what a buyer can pay to hit a target return, the returns bridge, and ability-to-pay analysis as a valuation cross-check.
• Cost of capital - the discount rate: WACC, cost of equity via CAPM, levering and unlevering beta, after-tax cost of debt, and the input choices that move the answer most.
• Enterprise vs equity value - the bridge every approach must cross: enterprise value to equity value, why EV pairs with EBITDA and equity value with EPS, diluted share count, and accretion/dilution analysis for M&A.

What Corey can do with it

Corey reads it whenever a job touches Company valuation, whichever skill is running.

Try asking

• Talk me through dcf valuation for Company valuation, and flag anything that changes often.
• What do I need to get right about relative valuation before I start?

What it will not do

• Give you regulated advice. This pack is reference, not advice: Corey does the prep and tells you what to confirm with a qualified adviser.
• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.

What it covers

• Public equity issuance - raising from public markets: the IPO and listing process and requirements, and post-listing follow-on tools - rights issues, placings, and secondary offerings - plus private placements as the bridge between the two worlds.
• Venture and growth rounds - the private financing ladder: pre-seed and seed through Series A/B/C and growth, the instruments (priced equity, SAFEs, convertible notes), and what each round is buying.
• Term sheets and economic terms - the rights that change the economics: liquidation preference, participation, anti-dilution, the option pool, pro-rata, and the protective/governance terms that sit alongside them.
• Cap tables and dilution - the arithmetic of ownership: pre- and post-money valuation, how a round and its option pool dilute, fully-diluted share counts, and how down rounds and preferences bite at exit.

What Corey can do with it

Corey reads it whenever a job touches Equity capital raising, whichever skill is running.

Try asking

• Talk me through public equity issuance for Equity capital raising, and flag anything that changes often.
• What do I need to get right about venture and growth rounds before I start?

What it will not do

• Give you regulated advice. This pack is reference, not advice: Corey does the prep and tells you what to confirm with a qualified adviser.
• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.

What it covers

• Deal types and structures - the legal shape: asset purchase versus share purchase versus statutory merger, carve-outs and spin-offs, and how the structure drives tax, liability, and consents.
• Sell side and buy side process - the two mandates and the auction spectrum: broad auction, targeted auction, and bilateral deal, plus the timetable and where leverage sits at each stage.
• The document chain - the paper that carries a deal in sequence: teaser, NDA, IM/CIM, process letter, indicative and final offers, LOI/heads of terms, and the SPA with its disclosure letter.
• Due diligence - the investigation streams (commercial, financial, legal, tax, and the specialists), the data room and Q&A, and how findings feed price and contractual protection.
• Price mechanisms and protections - turning enterprise value into cash paid: locked box versus completion accounts, the equity-value bridge in a deal, earn-outs, escrows and holdbacks, and warranties and indemnities.
• Synergies and integration - where the value is won or lost after signing: cost and revenue synergies, the control premium they justify, and the integration plan that has to deliver them.

What Corey can do with it

Corey reads it whenever a job touches M&A process, whichever skill is running.

Try asking

• Talk me through deal types and structures for M&A process, and flag anything that changes often.
• What do I need to get right about sell side and buy side process before I start?

What it will not do

• Give you regulated advice. This pack is reference, not advice: Corey does the prep and tells you what to confirm with a qualified adviser.
• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.

What it covers

• Fund structures and economics - the GP/LP structure, commitments and drawdowns, and the economics: the management fee, carried interest, the hurdle/preferred return, and the distribution waterfall.
• Return metrics - how performance is measured: IRR (time-weighted by the cash-flow clock), MOIC, DPI, RVPI and TVPI, the J-curve, and why a fund needs both a multiple and a rate.
• Fund types and alternatives - the shapes and asset classes: closed-end versus evergreen funds, the main private strategies (buyout, venture, growth, credit), and the basics of infrastructure and real assets.

What Corey can do with it

Corey reads it whenever a job touches Private markets and funds, whichever skill is running.

Try asking

• Talk me through fund structures and economics for Private markets and funds, and flag anything that changes often.
• What do I need to get right about return metrics before I start?

What it will not do

• Give you regulated advice. This pack is reference, not advice: Corey does the prep and tells you what to confirm with a qualified adviser.
• Never judge a fund on one number. A high IRR can mask a low multiple (fast small wins) and a high multiple can mask a poor IRR (slow capital).
• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.

What it covers

• Uk perimeter and financial promotions - the UK regulated-activities perimeter (FSMA), who needs FCA authorisation, and the financial-promotions regime governing what may be communicated and to whom.
• Uk market abuse and listing - the UK market-abuse regime (MAR): insider dealing, unlawful disclosure, and market manipulation; plus the Listing Rules and continuing obligations for listed issuers.
• The takeover code - the City Code on Takeovers and Mergers and the Takeover Panel: the rules governing public-company bids - mandatory offers, equal treatment, the timetable, and the put-up-or-shut-up regime.
• Nsia and foreign investment - the National Security and Investment Act: mandatory and voluntary notification of acquisitions in sensitive sectors, and foreign-investment screening as a global trend.
• Eu securities and funds - the EU regimes: MiFID II (investment services and conduct), the Prospectus Regulation (public offers and admissions), and AIFMD (alternative-fund managers and marketing).
• Cross border controls - the regimes that cut across every deal: merger control / antitrust, sanctions, and AML/KYC with the FATF standards behind them.

What Corey can do with it

Corey reads it whenever a job touches UK & EU deal regulation, whichever skill is running.

Try asking

• Talk me through uk perimeter and financial promotions for UK & EU deal regulation, and flag anything that changes often.
• What do I need to get right about uk market abuse and listing before I start?

What it will not do

• Give you regulated advice. This pack is reference, not advice: Corey does the prep and tells you what to confirm with a qualified adviser.
• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.

What it covers

• Adgm and difc - the two common-law financial free zones - Abu Dhabi Global Market (ADGM) and the Dubai International Financial Centre (DIFC) - their independent regulators (FSRA and DFSA), their English-law-based courts, and how they relate to the onshore UAE securities regulator (SCA).
• Uae onshore and foreign ownership - the onshore picture: mainland versus free zones, the foreign-ownership rules and their liberalisation, and what the structure choice means for a buyer or investor.
• Islamic finance principles - the doctrine: the prohibition of riba (interest) and gharar (excessive uncertainty), the asset-backing and risk-sharing requirements, and the role of the sharia board.
• Islamic finance instruments - the toolkit: sukuk (the "Islamic bond"), murabaha (cost-plus sale), ijara (lease), and mudaraba and musharaka (the partnership structures), and what each replaces in a conventional deal.

What Corey can do with it

• Finance advisor - The finance reasoning and prep layer.

Try asking

• Finance advice
• Talk me through adgm and difc for GCC and Islamic finance, and flag anything that changes often.
• What do I need to get right about uae onshore and foreign ownership before I start?

What it will not do

• Give you regulated advice. This pack is reference, not advice: Corey does the prep and tells you what to confirm with a qualified adviser.
• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.

What it covers

• Company network mapping - bind one human to a whole network on the public register: merge officer IDs by date of birth, follow "previous names" to defeat renaming, spot strike-off / phoenix patterns, read registered charges to find the live vehicle, and cross-reference the land register to locate the assets kept out of reach.
• Web evidence preservation - lock what the counterparty claimed online before it disappears: Wayback CDX history, Save Page Now snapshots, WHOIS history, and the dissolved-company-number trading check (a live site trading under a struck-off registration number).
• Identity misuse schedule - build a per-account schedule of identity/data misuse: the subject-access-request (SAR) strategy, how to prove absence of consent, the fictitious-name vs victim's-name distinction, and the data-regulator route.
• Multi head fraud schedule - assemble everything into a multi-head schedule for police, court, and press, with an evidence-grading convention that keeps the document honest and usable as it grows.

What Corey can do with it

Corey reads it whenever a job touches Counterparty evasion investigation, whichever skill is running.

Try asking

• Talk me through company network mapping for Counterparty evasion investigation, and flag anything that changes often.
• What do I need to get right about web evidence preservation before I start?

What it will not do

• Quote a price, limit or threshold from memory. Figures that move are kept in a dated ledger and re-checked against the primary source first.
• Do anything public, costly or irreversible without your yes.