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Reseller Monthly P&L Tracker

Know your profit. Enter revenue, COGS, and expenses to see gross profit, net profit, margins, and expense breakdown.

Where this fits

📦 Business & Seller OpsSeller OSSellersFounders

This tool lives inside Seller OS and is most useful for sellers and founders.

Corp Tax Rate21%
SE Threshold$400
FICA Cap 2024$168,600

Revenue & COGS

Operating Expenses

Profit & Loss Summary

Revenue$3,500.00
COGS−$1,400.00
Gross Profit$2,100.00
Operating Expenses−$1,045.00
Net Profit$1,055.00
Gross Margin
60.0%
Net Margin
30.1%
Profit/$ Sold
30.1¢
Expense Ratio
29.9%

Expense Breakdown

Platform Fees

$420.00

40.2%

Shipping Costs

$400.00

38.3%

Storage Fees

$50.00

4.8%

Returns/Refunds

$100.00

9.6%

Other Expenses

$75.00

7.2%

Seller playbook · Monthly business health

This reseller P&L is healthy enough to compound if you stay disciplined.

This month is landing at $1,055.00 in net profit on $3,500.00 of revenue. Gross margin is 60.0%, net margin is 30.1%, and you are keeping 30.1 cents from every sales dollar after operating expenses.

What To Do Next

Platform Fees is your largest controllable expense right now at $420.00. Start there before you chase more revenue.

Protect this margin by comparing which marketplaces deserve more of your inventory.

Use the reseller profit tracker next if you want item-level visibility instead of just the monthly roll-up.

Net margin

30.1%

$1,055.00 net after all modeled expenses

Gross margin

60.0%

$2,100.00 before operating costs

Expense ratio

29.9%

Platform Fees is the biggest drag

Profit per $1 sold

30.1¢

What actually sticks from each sales dollar

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1

Total revenue

sum of all sales for the month

$3,500.00

= $3,500.00

Gross sales before fees, refunds, shipping, or inventory costs are deducted.

Monthly sales summary

2

Cost of goods sold (COGS)

inventory cost attached to units sold

$1,400.00

= $1,400.00

COGS is the direct acquisition cost of the inventory that actually sold during the month.

Standard P&L / inventory accounting

3

Gross profit

revenue − COGS

$3,500.00 − $1,400.00

= $2,100.00

Gross profit shows how much money remains after paying for inventory but before operating expenses.

Standard P&L gross profit formula

4

Gross margin

(gross profit ÷ revenue) × 100

($2,100.00 ÷ $3,500.00) × 100

= 60.0%

Gross margin measures inventory efficiency by showing how much of each sales dollar remains after COGS.

Standard gross margin formula

5

Platform fees

revenue × platform fee percentage

$3,500.00 × 12%

= $420.00

This estimates marketplace commissions such as Amazon, eBay, Etsy, or other platform take rates.

Marketplace fee rate applied to revenue

6

Total operating expenses

platform fees + shipping + storage + returns + other expenses

$420.00 + $400.00 + $50.00 + $100.00 + $75.00

= $1,045.00

These are the costs of running the resale operation beyond inventory itself.

Operating expense aggregation

7

Net profit

gross profit − total operating expenses

$2,100.00 − $1,045.00

= $1,055.00

Net profit is the bottom-line operating result for the month before owner salary or income taxes.

Standard P&L net profit formula

8

Net margin

(net profit ÷ revenue) × 100

($1,055.00 ÷ $3,500.00) × 100

= 30.1%

Net margin shows how much of each sales dollar survives after both inventory and operating costs.

Standard net margin formula

9

Profit per dollar sold

net profit ÷ revenue

$1,055.00 ÷ $3,500.00

= 0.30 dollars retained per sales dollar

This reframes margin as dollars kept from every $1.00 of sales revenue.

Unit economics ratio from the income statement

#ShowYourWork

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