Tools & Calculators for Ecommerce Sellers
Quick calculators for Indian D2C and marketplace sellers — payouts, GST and TDS, unit economics and due dates.
Prepared by ecomca · rates awaiting CA reviewUpdated Calculated in your browser; copied links include your figures
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36 tools
- Marketplace & Payouts
Marketplace Payout Calculator
See what actually reaches your bank per order
~1 minOpen - Marketplace & Payouts
Quick-commerce Margin Calculator
See what each unit supplied to a quick-commerce platform earns
~2 minOpen - Profitability & Unit Economics
Contribution Margin (CM1 / CM2 / CM3) Calculator
See what each order leaves after product, fulfilment and marketing costs
~2 minOpen - Profitability & Unit Economics
RTO & COD Cost Calculator
See what returns and cash-on-delivery cost you each month
~2 minOpen - GST, TDS & Compliance
TCS & TDS Credit Calculator
See the TCS and TDS credits your marketplaces should have reported
~3 minOpen - GST, TDS & Compliance
GST Return Mismatch Checker
See which months’ GSTR-1, GSTR-3B and GSTR-2B gaps may trigger a notice
~3 minOpen - GST, TDS & Compliance
GST Inverted-Duty Refund Calculator
See how much piled-up input tax credit a refund can recover
~2 minOpen - Profitability & Unit Economics
Break-even ROAS & Max CAC Calculator
See the ad return you need before marketing loses money
~1 minOpen - Profitability & Unit Economics
Discount, Bundle & Free-Shipping Calculator
See how many more orders an offer needs to pay for itself
~2 minOpen - GST, TDS & Compliance
Ecommerce Compliance Calendar
See the GST, TDS, income-tax and ROC due dates that apply to you
~1 minOpen - Planning & Funding
13-Week Cash Flow Planner
See your bank balance week by week for the next quarter
~10 minOpen - Planning & Funding
Finance Readiness Scorecard
See how ready your books are for a fundraise or a lender’s review
~5 minOpen - Operations & Inventory
Inventory Reorder Calculator
See which SKUs to reorder now, how much to order, and the cash in slow stock
~5 minOpen - Operations & Inventory
Volumetric Weight Calculator
See the weight your courier bills, and what a smaller box could save
~2 minOpen - Operations & Inventory
Landed Cost & Supplier Comparison
Compare suppliers on what each unit really costs by the time you can sell it
~4 minOpen - Planning & Funding
Funding & Dilution Calculator
See what an equity round costs you in ownership, or a loan in interest
~3 minOpen - Profitability & Unit Economics
Cohort LTV, Blended CAC & Payback Calculator
See what a new customer really costs and how many months they take to pay it back
~3 minOpen - Planning & Funding
RBF & Working Capital True Cost Calculator
See what revenue-based financing really costs a year, and against a bank loan
~2 minOpen - GST, TDS & Compliance
Apparel & Footwear GST Cliff Calculator
See which prices lose margin when clothing or footwear moves into the higher GST slab
~2 minOpen - Marketplace & Payouts
Quick-Commerce Ad Spend (TACoS) & Fill-Rate Calculator
See what quick-commerce ads really earn after margin, GST, cannibalisation and fill-rate penalties
~3 minOpen - Profitability & Unit Economics
D2C-to-Offline Margin Waterfall Calculator
See what each unit really earns in general and modern trade after every channel margin, scheme and credit
~3 minOpen - Profitability & Unit Economics
COD-to-Prepaid Nudge & Checkout ROI Calculator
See whether a prepaid discount or checkout tool pays for itself in lower RTO and COD costs
~3 minOpen - Operations & Inventory
Amazon FBA vs Easy Ship & Aged Stock Calculator
Compare monthly profit on Easy Ship and FBA, and decide what to do with aged FBA stock
~3 minOpen - GST, TDS & Compliance
E-Commerce Export (CSB-V) LUT vs IGST Refund Calculator
See export profit per order and the cost of waiting for a GST refund under LUT or IGST
~3 minOpen - GST, TDS & Compliance
E-Commerce GST vs Income-Tax Turnover Reconciler
Tie marketplace sales in the tax statement to GSTR-8, GSTR-1, GSTR-3B and your books
~4 minOpen - GST, TDS & Compliance
GST IMS & ITC Time-Limit Planner
Get one IMS action per invoice and see previous-year ITC at risk
~5 minOpen - Marketplace & Payouts
Marketplace Claim-Window & Weight-Dispute Leakage Checker
Find return claims to file, short settlements and courier weight overcharges
~5 minOpen - GST, TDS & Compliance
Influencer Barter & Gifting Tax Calculator
See the real cost of influencer seeding and gifting after GST credit reversal and TDS
~2 minOpen - GST, TDS & Compliance
Foreign Remittance & TDS Section Mapper
See which Form 15CA part a foreign payment needs, the TDS, and the new TDS section for any domestic payment
~3 minOpen - Planning & Funding
QoE & EBITDA Bridge Calculator
See how a due-diligence review would restate your revenue and EBITDA
~4 minOpen - Operations & Inventory
Bookkeeping & Month-End Close Diagnostic
See the hours manual bookkeeping costs each month, and how fast a structured setup pays back
~2 minOpen - GST, TDS & Compliance
FEMA Late Submission Fee Calculator
See the due date and Late Submission Fee for a late FC-GPR, FC-TRS or FLA filing
~2 minOpen - GST, TDS & Compliance
GST Rule 42 & 43 ITC Reversal Calculator
See the common ITC to reverse for exempt supplies, and the annual true-up
~4 minOpen - GST, TDS & Compliance
GST & TDS Interest and Late Fee Calculator
See the interest and late fee on a late GSTR-3B, or on TDS deducted or paid late
~2 minOpen - Planning & Funding
Proprietorship vs LLP vs Private Limited Tax Calculator
Compare the total tax and cash left as a proprietorship, an LLP or a private limited company
~2 minOpen - Planning & Funding
Accounting Retainer Estimator
See what a monthly accounting retainer would cover for your setup
~1 minOpen
Why we built these
Each tool comes from the bookkeeping, GST and MIS work our team does every month for D2C and marketplace sellers: booking marketplace fees, separating GST from income, and tracing TCS and TDS credits. The same questions come up again and again, so we turned the working into calculators anyone can use.
Want these numbers checked against your real reports?
We review your recent settlements and walk you through what we find.
Contact usQuestions
Are these tools free to use?
Yes. There is no sign-up, and every result is shown on the page — you never have to fill in a form to see it.
Do you see or store the numbers I type?
No. The calculations run in your own browser and nothing you type is sent to us. You can share a result by copying the page link, which carries your inputs in the address.
How reliable are the results?
They are estimates, based on the assumptions listed on each tool page. Real settlements include returns, adjustments and timing differences a calculator cannot see, so use them to plan and to check your reports — not as advice for your situation.
Where do the tax rates come from?
Each rate is kept in one settings file with its legal reference and source, and each tool page shows the date its rates were last verified by a CA. If a rate has not been verified yet, the page says so.