Increase margin, price with confidence, and avoid stockouts
MarginKit gives importers, resellers, and e-commerce teams practical calculators to make pricing and inventory decisions in under a minute.
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User paths
Choose your workflow
Go straight to the calculators that match how you run your business.
I import products
Estimate landed cost, per-unit import cost, and pricing floors before ordering.
I sell online
Model margin, break-even price, and break-even ROAS for channel decisions.
I manage stock in spreadsheets
Plan reorder points, safety stock, and run CSV reorder alerts in-browser.
Featured calculators
Most-used tools for weekly operator decisions
Start here for cost, margin, and profitability clarity in seconds.
Landed Cost Calculator for Importers
Calculate your full landed cost and unit economics including shipping, duty, tax, and extra fees.
Cost Per Unit After Shipping & Import Fees
See exactly how shipping and import charges change your true unit cost.
Import Profit Margin Calculator
Turn landed cost into clear profit, margin %, and markup % for better pricing decisions.
Supplier Cost Increase Impact Calculator
Measure how supplier price changes affect margin and monthly profit instantly.
Margin Calculator After Shipping Fees
Calculate true margin after shipping, payment fees, and variable selling costs.
Discount Impact on Margin Calculator
Understand how discounts affect margin and how many extra units you need to keep profit.
How it works
Simple workflow, actionable output
Built to show value quickly without account setup or spreadsheet cleanup.
Choose a tool
Open the calculator that matches the decision you need today.
Enter your numbers
Use real costs, sales, and stock values with instant validation.
Act on insights
Get clear metrics plus risk labels to decide faster.
Why MarginKit
Built as a serious operating toolkit for importers and online sellers who need clean unit economics and reliable stock decisions.
See all profit tools- Built for real sellers
- Instant calculations
- No spreadsheet chaos
- Designed for growth into smarter workflows
Run your next pricing or stock decision with confidence
Start free now. Upgrade later to save scenarios, compare SKUs, and automate reorder workflows.
Categories
Explore tools by operating function
Jump directly into focused hubs for cost, margin, inventory, and marketplace decisions.
Import cost tools
Landed cost, unit fee allocation, and import pricing thresholds.
Profit margin tools
Margin, markup, discount impact, and supplier increase analysis.
Inventory planning tools
Reorder point, safety stock, runway checks, and CSV alert workflow.
Marketplace seller tools
Break-even price and ROAS metrics for paid growth and channel economics.
Guides
Learn with practical guides
Compact analytical pages for operators who want deeper decision context before running calculators.
How to Calculate Landed Cost for Imported Products
Step-by-step landed-cost analysis with scenario comparison and fee-sensitivity chart for import pricing decisions.
Practical angle: Shows how shipping, duty, VAT, and handling charges move true per-unit cost.
Read guideHow Discounts Affect Profit Margin
Operational discount economics guide covering margin compression, required volume lift, and promo decision thresholds.
Practical angle: Compares 5% to 20% discount depth and quantifies when revenue growth still harms profit.
Read guideHow to Calculate Reorder Point with Lead Time
Inventory planning guide with lead-time demand logic, demand scenarios, and reorder threshold sensitivity analysis.
Practical angle: Shows how daily sales, lead-time assumptions, and safety stock policy shift reorder timing.
Read guideFAQ
Frequently asked questions
Quick answers before you run your first calculation workflow.
Built for importers, resellers, e-commerce sellers, and marketplace operators.
Fast calculations, clear insights, and architecture ready for Pro.