Adela Mincea
Marketing P&L Calculator
Most accounting P&Ls bury marketing in operating expenses. This one separates it out so you can see what marketing is actually contributing to the business after you pay for ads, tools, and team. Sixty seconds, no signup, no spreadsheet.
Total monthly revenue from all sources.
As a percentage of revenue. Materials + fulfilment + payment processing.
Google, Meta, LinkedIn, etc.
Analytics, CRM, email, automation.
In-house salaries + agency fees.
Calculation is contribution-margin level. Includes ad spend, tools, and marketing team only. Excludes shared overhead (office, admin, taxes, founder salary). For a complete commercial audit on your real numbers, see the Digital Economic Review.
Most founders don't see this view, ever
The accounting P&L tells you whether the business made or lost money last month. It groups marketing costs alongside rent, insurance, and software subscriptions. The information is correct. It's also useless for deciding whether marketing is working.
The marketing P&L view answers a different question: of every dollar of revenue, how much survives the cost of goods, the ads, the tools, and the team to actually contribute to everything else the business has to pay for?
When you look at marketing in isolation from the rest of the P&L, ROAS and ROI both understate the cost. Tools cost real money. Team or agency costs cost more than the ad spend in most accounts under $50K/month in budget. The P&L view forces all of it into the same picture.
If your contribution after marketing is negative or thin, the fix is rarely "spend more on ads." It's usually pricing, margin, or cutting tooling and headcount that isn't earning its keep. The audit work I do is exactly this conversation, with your real numbers.
Digital Economic Review
Run this calculation against your full account: CAC by channel against actual margin, attribution quality, ROAS stability, and a scaling verdict. The economist's read on whether your acquisition model holds. $999, 5-7 business days.
See what it covers →Google Ads Audit
If most of your marketing P&L pain is in the ad spend line, the Google Ads Audit is the wedge: structure, waste, search intent, bidding, creative alignment, prioritized fix roadmap. $499, 3-5 business days.
See what the audit covers →More marketing economist calculators
- Break-Even ROAS Calculator — find the minimum ROAS your account needs at any margin level.
- ROAS is a revenue metric. Your business runs on margin. — the long-form explainer this calculator is built around.
- Marketing economist vs. marketing specialist — why the P&L view exists when channel reports never surface it.
Marketing P&L FAQ
A marketing profit and loss statement is a focused view of how marketing investment translates to commercial outcomes. It starts with revenue, subtracts cost of goods sold to reveal gross profit, then subtracts every marketing cost (ad spend, tools, team, agency) to show what marketing actually contributes after you pay for it. Most accounting P&Ls bury marketing costs in 'operating expenses' alongside everything else; a marketing P&L isolates them so the relationship between spend and contribution is visible.
Accounting P&Ls organize costs by category for tax and compliance purposes, not for decision-making. Marketing sits inside operating expenses next to rent, software, insurance, and dozens of other line items. The accounting view is correct, but it doesn't answer the question 'is marketing profitable?' That requires lifting marketing costs out and comparing them directly to the gross profit they're supposed to be generating.
Three categories: ad spend (Google, Meta, LinkedIn, etc.), tools and software (analytics, CRM, email platform, attribution tools, automation), and people (in-house marketing salaries plus agency or freelancer fees). Some businesses also include content production, design, and event costs. The principle is: anything that exists to generate or convert demand. If you removed it tomorrow, would lead flow drop? If yes, it's a marketing cost.
Benchmarks vary by stage and category. Mature B2B services typically run 5-12% of revenue. SaaS in growth mode often runs 20-40%. E-commerce sits anywhere from 8-25% depending on margin structure. The percentage matters less than the trend: is marketing as a share of revenue stable, declining (efficiency improving), or rising (paying more for the same output)? The latter is the signal worth investigating.
It's gross profit minus total marketing cost. The amount left to cover overhead, operations, taxes, and net profit. If contribution after marketing is negative, your business is losing money on every revenue dollar before you've paid for office, admin, or yourself. If it's positive but small, you have a thin margin business that can't absorb shocks. The number doesn't tell you whether marketing is right or wrong on its own — it tells you what marketing is leaving on the table for the rest of the business.
ROAS measures revenue per dollar of ad spend only. ROI measures profit per dollar of total marketing investment, but the formula is often calculated inconsistently. The marketing P&L view sits above both: it shows you the structure underneath the ratios. You can have a 4x ROAS that produces a negative contribution after marketing if your gross margin is thin and your team costs are high. The ratios are useful diagnostics; the P&L is the picture they're describing.
Want this calculation run on your real numbers?
The Digital Economic Review covers your full marketing economic picture: CAC by channel against margin, attribution quality, ROAS stability, and a scaling verdict. $999, delivered in 5-7 business days.