I write about using AI to do better finance work. From the CFO seat.
Free practitioner guides on building Claude finance agents, Cowork plugins for capital markets, AI-powered DCF dashboards, and Excel automation. No theory. Just production-tested workflows from the CFO seat.
AI Finance Guides & Resources
Practitioner's notes on using AI in finance. Everything here has been tested in a real finance function, not in a sandbox.
Updated March 2026
Guides
The Full Claude Guide to SEC Filing Signal Automations
Build automated signal systems that monitor SEC filings in real-time, classify corporate events using AI, and deliver actionable alerts to your phone within minutes. Full implementation walkthroughs for loan covenant violations and auditor changes.
Get the GuideBuilding AI Agents with 3 Text Files
A practitioner's guide to building repeatable, shareable AI agents using START, TASKS, and MEMORY files inside Claude Cowork. No code. No API keys. Includes two real production examples from finance workflows.
Get the GuideFrom Annual Report to Interactive Dashboard
How to use Claude Skills to build, secure, and deploy investment banking-grade financial model dashboards. Covers skill creation, the 5-minute execution workflow, password protection, authentication layers, and hosting on Netlify.
Get the GuideThe Full Claude Guide to Excel for Finance Specialists
Setup, prompts, Cowork plugins, prompt engineering principles, and an honest assessment of limitations. Everything you need to start using Claude in Excel for real finance work.
Get the GuideClaude Cowork Plugins for Capital Markets
A reference guide to every Cowork plugin relevant for capital markets work, including LSEG, S&P Global, and custom GitHub-based skills for financial analysis.
Get the GuideMy AI Stack
My daily workhorse for production finance. I use it for building repeatable agents (START/TASKS/MEMORY), running Cowork plugins (LSEG, S&P, GitHub), creating interactive DCF dashboards, prompt engineering, and secure Excel workflows. Most of the guides on this site were built with Claude.
Best for complex multi-step reasoning, real-time X/web search, and finance deep-dives without heavy safety rails. I use it for market sentiment analysis, quick validation of controversial finance topics, and getting fast answers that other models hedge on.
Opinions
Practical Work
Bolt Valuation Model: Built in 2 Hours with Claude
Full DCF valuation of a pre-IPO company using Claude's Excel integration. Nine-step methodology walkthrough with honest assessment of AI's role at each stage.
45-Minute Meeting to Confluence Page in 5 Minutes
Full workflow: Google Meet recording to structured documentation with summaries, decisions, and action items. Zero tab switching, zero copy-pasting. Built with Claude connectors.
Equity Valuation Prompting Guide
How to prompt Claude for institutional-quality equity models. Tested on Wise plc and Klarna Group with real annual report data and sector benchmarks.
Articles
Longer-form writing on AI in finance
In-depth analyses, case studies, and frameworks. Subscribe to get notified when the first article drops.
I'm Gustav. CFO in fintech, and I use Claude across almost everything I do.
I work in capital markets and corporate finance in the Baltics. My days are split between Excel models, board presentations, creditor calls and negotiations, and the kind of cross-functional work that never fits neatly into one tool.
I started using Claude because I needed to move faster. Once I understood how my processes were actually built, curiosity took over: I wanted to find better ways to run them. It turned out to be useful across more of my workflow than I expected: financial models, investor decks, due diligence reviews, drafting covenant trackers, even building ad-hoc tools to manage day-to-day operations.
I like to teach and share what I've learned, so I decided to start writing it down. What you'll find here are practitioner's notes on using AI in finance: guides, workflows, and honest takes written for finance professionals who want to skip the hype and see what actually works.
AI across the full finance workflow.
AI in Excel & Financial Modeling
Building DCFs, debugging formulas, creating covenant trackers, sensitivity tables, loan tape analysis, and easily viewable financial results summaries. The stuff that takes hours and now doesn't have to.
Presentations & Board Materials
Using AI to draft investor decks, board packs, and earnings materials. Cross-app workflows from spreadsheet to slide.
Capital Markets & the Modern CFO
How AI changes the way companies raise capital, manage creditor relationships, and run a finance function at scale.
Practical Prompt Engineering
The techniques that separate generic AI output from work you'd actually send to a counterparty. Tested in production, not in a sandbox.