Main Street Wealth Open Source

Main Street Wealth Open Source is a public hub of mergers and acquisitions tools built for lower middle-market home service businesses. It brings valuation calculators, financial analysis references, deal-structure models, diligence checklists, datasets, and automation resources into one searchable catalog. The material is tailored to HVAC, plumbing, roofing, pest control, landscaping, pool service, electrical, and adjacent trades, so it speaks to the operating details of those businesses instead of treating every private-company transaction the same.

The directory is organized around stages of a deal. Valuation tools cover EBITDA, seller's discretionary earnings, documented add-backs, multiples, discounted cash flow, leveraged buyouts, comparable transactions, working capital, and rollover equity. Other sections address quality of earnings, recurring revenue, customer concentration, seasonality, earnouts, seller notes, proceeds, target sourcing, due diligence, legal documents, exit readiness, data, and automation. Filters by category, trade, and deal stage help an owner, buyer, or adviser start with the part of the process in front of them.

At the time reviewed, the hub marks 18 of its planned 100 resources as live and the remaining 82 as planned. The live starting set includes core calculators such as EBITDA, SDE, adjusted add-backs, valuation multiples, rollover equity, net proceeds, exit readiness, and owner dependence. The site also connects to 20 free tools on the firm's main website, including business valuation, customer concentration, recurring revenue, route density, seasonal normalization, deal structure, transaction tax, and comparable sales. The large catalog should therefore be read as a roadmap as well as a collection users can explore now.

The hub goes beyond browser calculators. Its documentation points to open datasets for transaction multiples, trade benchmarks, and public comparables, along with a data API and an MCP server. The automation section plans prompt libraries, document extraction, financial summarization, agent evaluations, and other components for teams building M&A workflows. A local installation guide and public GitHub repository make the project inspectable and adaptable. This is especially useful for advisers or acquisition teams that want formulas and reference data they can review rather than a score produced by an unexplained model. Documentation is indexed alongside the tools, with guides for local installation, using the data API, and configuring the MCP server. Concept references cover subjects such as EBITDA versus SDE, add-back documentation, rollover economics, and transaction terminology. This makes the site useful both as a set of utilities and as a map of the concepts that connect them.

The focus on home services is the main differentiator and also an important boundary. The site calls out how maintenance plans affect HVAC value, how recurring revenue shapes pest-control multiples, and how route density and seasonality matter for field-service companies. It pairs those trade-specific considerations with conventional transaction mechanics such as add-back schedules, earnouts, seller financing, rollover equity, closing checklists, and net proceeds. Owners preparing for a sale can use the simpler diagnostics, while analysts can move into benchmarks, diligence materials, and reusable data.

Provenance receives more attention than it does on many free calculator sites. Main Street Wealth says each tool carries a named byline and review date, identifies the team maintaining the hub, and describes datasets as including a sample size and source for every row. The homepage labels displayed benchmark figures as illustrative, which is an appropriate warning not to treat a single multiple as a valuation conclusion. These tools can structure questions and calculations, but they don't replace a quality-of-earnings review, legal advice, tax advice, or transaction work based on the specific company.

Access is open source and the connected main-site tools are presented as free. Users can browse the live hub in a web browser, consult the documentation, or work from the linked repository and local installation materials. There isn't a paid software tier described on the open-source site. The practical limitation is completeness, since most of the announced 100-tool catalog is still planned. For owners and advisers in the supported trades, the live resources still form a useful, transparent starting library, especially when paired with professional review before a decision or signed agreement.