R&D Monthly Spend
Total monthly cash outflow on research and development — fully-loaded engineering, product, and design payroll plus tooling, infrastructure dedicated to product development, contractors, and direct R&D vendor spend. The "input" side of R&D efficiency. Common pitfall: companies report base-payroll R&D and exclude the loaded cost (benefits, stock comp at cash-cost basis, allocated rent, dev tooling), under-reporting true R&D burn by 25–40%. Boards should always ask whether the number is base-payroll, fully-loaded, or GAAP R&D expense — they tell different stories. The KBCM/Sapphire SaaS Survey reports R&D as a percentage of revenue for its company panel — use that as the benchmarking lens. — Product KPI anchored to KBCM/Sapphire SaaS Survey 2024 (15th Annual).
Rogue ID: product.rd_monthly_spend
Type: Currency (/month)
Domain: Product
Definition
Total monthly cash outflow on research and development — fully-loaded engineering, product, and design payroll plus tooling, infrastructure dedicated to product development, contractors, and direct R&D vendor spend. The "input" side of R&D efficiency. Common pitfall: companies report base-payroll R&D and exclude the loaded cost (benefits, stock comp at cash-cost basis, allocated rent, dev tooling), under-reporting true R&D burn by 25–40%. Boards should always ask whether the number is base-payroll, fully-loaded, or GAAP R&D expense — they tell different stories. The KBCM/Sapphire SaaS Survey reports R&D as a percentage of revenue for its company panel — use that as the benchmarking lens.
Formula
Sum of fully-loaded R&D-team payroll + benefits + allocated stock-comp + R&D-dedicated infrastructure + R&D tooling + R&D vendor spend, expressed as a monthly figure. Different from GAAP R&D expense (which capitalizes some software development costs); footnote the convention.Why it matters
Largest single line of operating spend at most growth-stage SaaS companies — the input that rd_efficiency converts into revenue. The board reads this to gauge whether the company is over- or under-investing in product velocity relative to revenue ramp.
How to interpret
Compare R&D spend to revenue (or ARR run-rate) to derive R&D-as-% of revenue. Per the KBCM/Sapphire SaaS Survey (latest annual edition — see capital-allocation section), median R&D-as-% of revenue runs ~25–35% at early-growth SaaS and compresses with scale. Out-of-band (e.g. 60%+ at a $20M ARR company) usually signals either heavy platform-investment cycles or under-monetization — flag for context. Always pull the current KBCM/Sapphire edition rather than relying on a memorized range.
Related KPIs
product.rd_efficiencyproduct.total_engineersproduct.innovation_capacity_pctsales.arrfinance.net_burn_rate
Source
KBCM/Sapphire SaaS Survey 2024 (15th Annual) · section: R&D as % of Revenue (capital-allocation section) — published 2024-09-01.
Why does this cite KBCM/Sapphire SaaS Survey 2024 (15th Annual)? Read the ontology methodology for the published vs editorial tier system, attribution rules, and dispute process.
Stage relevance
| Company stage | Priority |
|---|---|
| Series A | Core |
| Series B | Core |
| Series C+ | Core |
| Public | Core |
Suggested for stages: Series A, Series B, Series C+, Public.
Default owning functions
- R&D
- Finance
Machine-readable
- This KPI as JSON:
/api/ontology/product/rd_monthly_spend.json - All Product KPIs:
/api/ontology/product.json - Full catalog:
/api/ontology/index.json