Trade credit looks free on the invoice. It isn't. Learn how to calculate the true financing cost of your distributor payment terms and find the channels quietly destroying your margin.
Your distributor pays you in 60 days. Your cost of capital is 18%. That means every dollar sitting in your distributor's account for those 60 days is costing you almost 3 cents in financing cost that never appears on any invoice, any P&L line item, or any channel profitability report.
Multiply that by your total receivables across all distributors and channels, and the number stops being theoretical. It becomes a structural margin leak that compounds every month - invisible to anyone who hasn't done the calculation.
The Calculation Nobody Runs
The cost of trade credit is straightforward to calculate but almost never calculated at the channel level. Here's the formula:
Trade Credit Cost = (Average Receivable Balance x Cost of Capital x Days Outstanding) / 365
For a distributor carrying $500,000 in receivables at 60-day terms with an 18% cost of capital:
$500,000 x 18% x 60 / 365 = $14,795 per year
That's nearly $15,000 in financing cost from a single distributor - money your business is lending to the channel, interest-free, with no line item tracking it.
TRADE CREDIT COST BY CHANNEL
Annual financing cost at 18% cost of capital
| Channel | Days Outstanding | Avg Receivable | Annual Cost |
|---|---|---|---|
| Modern Trade | 30 days | $400K | $5,918 |
| Distributor A | 60 days | $500K | $14,795 |
| Distributor B | 45 days | $300K | $6,658 |
| Traditional Trade | 90 days | $200K | $8,877 |
| Total Portfolio | Weighted avg | $1,400K | $36,248 |
Now multiply across your full distributor network. A mid-size FMCG company with 15 distributors averaging 45-day terms and $300,000 in receivables per distributor is carrying $2.7 million in trade credit. At 18% cost of capital, that's $486,000 per year in invisible financing cost. At 24% - common in high-inflation emerging markets - it's $648,000.
Why This Matters More Than You Think
The financing cost of trade credit is only the first-order effect. The second-order effects are where the real margin destruction happens.
Channel profitability inversion. A channel that shows 32% gross margin before trade credit economics might show 24% after the financing cost, distributor rebates, and returns are factored in. A different channel at 28% gross margin with 15-day payment terms might net 26% after the full waterfall. The "lower margin" channel is actually more profitable - but nobody sees it because the trade credit cost is never allocated.
Volume-weighted distortion. Your highest-volume distributors often have the longest payment terms because they negotiate from a position of strength. That means your biggest channel partners are also your most expensive to finance - and the cost scales linearly with volume. A 10% volume increase through a 90-day distributor doesn't create 10% more margin. It creates 10% more margin minus 10% more financing cost at the longest terms in your portfolio.
Competitive subsidisation. When you extend 60-day credit to a distributor, you're financing their working capital. That capital could be deployed elsewhere in your business - inventory, marketing, capacity. Instead, it's sitting in your distributor's bank account, funding their operations at your expense. In effect, you're providing a zero-interest loan to a channel partner whose own cost of capital is often higher than yours.
CHANNEL MARGIN WATERFALL
From gross margin to true net channel margin
The Full Channel Margin Waterfall
The gap between gross margin and true channel margin is where the hidden costs accumulate. A typical FMCG channel waterfall looks like this:
Gross margin: 42%. This is the number your P&L reports. It's the number your commercial team tracks. And it's the number that creates a false sense of margin health.
Then the deductions begin.
Distributor margin: -12%. This is visible and negotiated. Most companies track it.
Trade credit financing cost: -3 to 5%. This is the invisible one. Calculated as above, allocated per channel. Almost nobody tracks it.
Rebates and incentives: -2 to 4%. Volume rebates, loyalty incentives, listing fees. Tracked in aggregate but rarely allocated to individual channels.
Returns and damages: -1 to 2%. Product returned unsold, damaged in transit, expired on shelf. Tracked as a cost centre, rarely attributed to the channel that generated it.
Logistics and delivery: -3 to 6%. The cost of servicing each channel - delivery frequency, drop sizes, geographic spread. Varies enormously between modern trade (large, consolidated drops) and traditional trade (small, fragmented, high-frequency).
Net channel margin: 18-22%. That's 20-24 percentage points of deduction between what your P&L says and what you actually earn from each channel. And the composition of those deductions varies dramatically between channels - which means the channel that looks most profitable at gross margin may be least profitable at net margin.
The Three Questions Your Channel Review Should Answer
1. What is the true cost of capital deployed in each channel?
Not the average across all channels. The specific cost per channel, calculated from actual days outstanding (not contractual terms - actual collection days), actual receivable balances, and your current cost of capital. The gap between contractual terms and actual collection days is often 15-30 days - meaning your financing cost is 25-50% higher than the contract suggests.
2. Which channels are margin-positive after the full waterfall?
Run the complete waterfall for each channel: gross margin minus distributor margin minus financing cost minus rebates minus returns minus logistics. Rank channels by net margin, not gross margin. The ranking will change - sometimes dramatically. Channels you thought were profitable may be structurally unprofitable once the full cost is visible.
3. What is the minimum viable volume for each channel to cover its fixed costs?
Every channel has a cost floor - the minimum revenue required before margin turns positive after all deductions. Below that floor, every additional dollar of revenue through that channel is margin-destructive. Knowing this number per channel lets you make rational decisions about where to invest commercial effort and where to pull back.
CHANNEL PROFITABILITY RANKING
Ranked by net margin after full waterfall - not gross margin
| Rank | Channel | Gross Margin | Net Margin | Days Outstanding | Verdict |
|---|---|---|---|---|---|
| #1 | Modern Trade | 28% (#5) | 22% | 30 days | Profitable |
| #2 | Distributor C | 35% (#3) | 19% | 45 days | Profitable |
| #3 | Distributor A | 38% (#2) | 14% | 75 days | Watch |
| #4 | Traditional Trade | 42% (#1) | 11% | 90 days | At Risk |
| #5 | Distributor B | 32% (#4) | 8% | 90 days | At Risk |
Traditional Trade ranks #1 by gross margin (42%) but drops to #4 by net margin (11%) - a 31-point gap driven by 90-day credit terms and high logistics costs.
What Happens Next
If you've never run the full channel waterfall on your business, the gap between your reported gross margin and your true net channel margin is almost certainly larger than you expect. The financing cost of trade credit alone - the single line item this article has focused on - typically represents 3-5 percentage points of margin that shows up nowhere in standard financial reporting.
The MarginCOS P3 engine calculates the complete channel economics waterfall automatically. It takes your channel data, applies the financing cost calculation using your actual cost of capital, allocates every deduction to the specific channel that generated it, and ranks your channels by true net margin - not the gross margin your P&L reports. The result is a view of channel profitability that most companies have never seen, despite having all the data to calculate it.