Every fee mapped. Every SKU tracked.

MultiTally builds a true profit-and-loss statement for every product you sell. It reads settlement data — the same source each marketplace uses to calculate your payouts — and maps every line item to a canonical fee category. No estimation, no sampling, no missing charges.

• 50+ Amazon fee types mapped: referral, FBA fulfillment, monthly and long-term storage, advertising, return processing, subscription fees, removal, and disposal
• Walmart referral fees (2.35–20% by category), WFS fulfillment fees, and return processing
• Shopify payment processing (2.9% + $0.30), shipping labels, and app fees
• COGS tracking with date ranges — because costs change over time (cost per unit + shipping per unit + prep cost)
• True net profit = Revenue − All Fees − COGS − Returns

Selling on multiple marketplaces only makes sense if you know where each product is most profitable. MultiTally shows side-by-side P&L for the same product across Amazon, Walmart, and Shopify so you can see exactly where your margin is highest.

• Side-by-side profit breakdown for the same product across all connected marketplaces
• Auto-match products across marketplaces by SKU
• Margin difference callouts: see that you make X% higher margin on Amazon vs Shopify at a glance
• Available on Starter plan and above

Marketplace fee structures are complex and change frequently. MultiTally categorizes every charge into a canonical type — referral, fulfillment, storage, advertising, returns, payment processing, subscription — while preserving the raw fee name so you can trace exactly what each marketplace charged.

• Every fee categorized: referral, fulfillment, storage, advertising, returns, payment processing, and subscription
• Raw fee names preserved alongside canonical categories for full traceability
• Historical fee tracking to spot unexpected increases or new charges

Cost of goods sold changes over time — supplier price increases, shipping rate adjustments, new prep requirements. MultiTally tracks COGS per product with date ranges so that each sale is matched to the cost record that was active at the time of sale, not a static average.

• Per-product cost records with effective date ranges
• Supports cost per unit, shipping per unit, and prep cost
• Temporal matching: sales matched to the COGS record active at the time of sale
• CSV upload for bulk cost entry
• Missing COGS alerts so no product is miscalculated

Export your profitability data in the format you need. CSV exports support configurable columns for detailed or summary analysis. PDF reports include charts and an executive summary for sharing with partners or bookkeepers.

• CSV export with configurable columns (detailed or summary mode)
• PDF profitability reports with charts and executive summary (Professional plan and above)
• Customizable date ranges and filters: marketplace, search term, missing COGS, and negative profit

A free tool that requires no account. Enter your product details — price, weight, dimensions, category, and cost of goods — and compare projected fees and profit across Amazon FBA, Walmart WFS, and Shopify before you list.

• Free to use — no account required
• Compare fees and projected profit across Amazon FBA, Walmart WFS, and Shopify
• Uses current 2026 fee schedules, updated when marketplaces change rates
• Includes break-even analysis and suggested pricing

MultiTally automatically syncs your marketplace data on a schedule determined by your plan tier. Solo, Starter, and Professional plans sync daily. Business tier syncs hourly. Manual sync is always available with a 15-minute cooldown between requests.

• Daily automated sync for Solo, Starter, and Professional tiers
• Hourly sync for Business tier
• Manual sync available anytime with a 15-minute cooldown
• Encrypted credential storage — AES-256 encryption at rest

Your marketplace credentials and financial data are protected with industry-standard security. Authentication is handled by Supabase Auth with ES256 JWT verification. All marketplace API credentials are encrypted at rest using Fernet symmetric encryption.

• Supabase Auth with ES256 JWT verification via JWKS
• Row-level security — users can only access their own data
• Encrypted marketplace credentials (Fernet symmetric encryption)
• No raw passwords stored
• HTTPS everywhere with Cloudflare WAF protection
• SOC 2 and GDPR-aligned data handling practices

AI features powered by Anthropic Claude will add automated analysis on top of your profitability data. Haiku handles high-volume categorization tasks. Sonnet generates narrative reports and answers natural language questions about your numbers.

• Monthly automated P&L reports with executive summary
• Margin alert explanations when profit drops unexpectedly
• Natural language queries — ask questions about your data in plain English
• Powered by Anthropic Claude (Haiku for categorization, Sonnet for analysis)