Site Structure

Human-readable internal link map for crawl discovery. See also sitemap and XML sitemap.

Pillar (home)

/ — ROI Calculator (homepage). Links to: Learn, Glossary, Methodology, About, Privacy; vertical hubs (Marketing, Real Estate, SaaS, Solar); Benchmarks; Comparisons; key learn and glossary pages.

Learn

/learn/what-is-roi.html — What Is ROI?
/learn/roi-formula.html — ROI Formula
/learn/how-to-calculate-roi.html — How to Calculate ROI
/learn/roi-limitations.html — ROI Limitations
/learn/roi-vs-irr.html — ROI vs IRR

Each links to: ROI calculator, other learn pages, glossary, comparisons.

Glossary

/glossary/ — Glossary index.
Terms: annualized-return, cac, cap-rate, churn-rate, ebitda, gross-margin, ltv, net-profit, payback-period.

Each term links to related terms and calculator/learn.

Hubs

/marketing/ — Canonical Marketing ROI category hub (programmatic, generator-controlled). Lists the 4 factory Marketing calculators: /calculators/marketing-roi-calculator.html (flagship: ad spend vs attributed revenue), email-marketing-roi-calculator, influencer-roi-calculator, content-marketing-roi-calculator. /roi-calculator/marketing/roas-calculator.html and lead-generation-roi.html remain distinct hand-authored child tools (different metrics/spend categories, no factory equivalent) at their existing paths. The legacy /roi-calculator/marketing/ hub and its duplicate email-marketing-roi.html are consolidated here (301 redirect).

/real-estate/ — Canonical Real Estate ROI hub (Phase 3 reference implementation). Rental property ROI calculator on-page: purchase price, down payment, rent, expenses, vacancy, financing, appreciation; one dominant ROI result + interpretation. Links to 3 distinct child tools (cap rate, cash-on-cash, flip ROI) directly under /real-estate/ and to benchmarks. /real-estate/roi-calculator.html and the legacy /roi-calculator/real-estate/ subtree (hub + 3 duplicate calculators) are consolidated here (301 redirect).

/saas/ — Canonical SaaS ROI hub (Phase 2 reference implementation). Buyer-side calculator on-page: employees, wage, hours/week, monthly cost, implementation, horizon; optional revenue mode; chart; one dominant ROI result + interpretation. Links to 3 distinct SaaS unit-economics child tools and to benchmarks. /saas/roi-calculator.html and the legacy /roi-calculator/saas/ hub are consolidated here (301 redirect).

/hvac/roi-calculator.html — HVAC payback (efficiency upgrade vs annual energy cost).

/hr/roi-calculator.html — Employee retention / turnover cost (exits × hiring + vacancy payroll).

SaaS unit-economics child tools (under /roi-calculator/saas/, linked from /saas/): cac-ltv-roi, subscription-growth-roi, time-to-value-roi. Cross-links: /saas/, Marketing, Real Estate, Solar.

/solar/roi-calculator.html — Canonical Solar ROI page (Phase 4 reference implementation). Solar panel calculator on-page: system cost, tax credit %, annual kWh usage, electricity rate, escalation, lifespan; payback period dominant result + 20-year/lifetime ROI and savings as supporting metrics + interpretation. Links to 2 distinct child tools (heat pump, EV charger) and to benchmarks. The links-only guide at /solar/ and the legacy /roi-calculator/solar/ hub + its duplicate solar-panel-roi.html calculator are consolidated here (301 redirect).

/roi-calculator/solar/heat-pump-roi.html, /roi-calculator/solar/ev-charger-roi.html — Distinct energy-equipment ROI child tools retained at their existing paths (different equipment, inputs, and math from the solar panel calculator).

Comparisons

/comparisons/ — ROI Comparisons hub.
Pages: best-roi-calculator, roi-vs-irr, roi-vs-npv, roi-vs-payback-period, roas-vs-roi, cap-rate-vs-roi, cash-on-cash-vs-roi.

Each comparison links to: calculator, other comparisons, relevant hubs, glossary.

Benchmarks

/benchmarks/ — ROI Benchmarks hub.
Pages: average-roi-by-industry, marketing-roi-benchmarks, saas-roi-benchmarks, real-estate-roi-benchmarks, solar-roi-benchmarks, small-business-roi-benchmarks.

Each links to: calculator, vertical hubs, comparisons, learn, glossary.

Utility

/sitemap.html — HTML sitemap (this structure as links).
/site-structure.html — This page.
/404.html — Custom not-found page.
/methodology/ — Methodology (noindex; /methodology.html redirects here).
/about.html, /contact.html, /terms.html, /privacy.html — Legal and info (noindex).