StowBill
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● Multi-tenant WMS for 3PLs & brands

Bill for everything you handle.

StowBill records every receipt, pick, pack, ship, storage day, and return the moment it happens — so the revenue you earn is the revenue you invoice. Operator console, customer portal, and RF scanner, on one system.

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Append-only ledger · row-level tenant isolation · Shopify, QuickBooks & EasyPost built in
5–15%
of 3PL revenue leaks through charges that never make it onto an invoice. StowBill closes that gap by capturing at the source.
100%
of stock movements and charges land on an append-only ledger — immutable, reconcilable, and audit-ready by default.
3 → 1
operator console, branded customer portal, and mobile RF scanner — one platform instead of three tools stitched together.
Billing correctness

If it happened in the warehouse, it’s on the invoice.

Most systems bill from what someone remembers to enter. StowBill bills from what actually occurred. Every operation emits a priced event the instant it completes; storage is snapshotted nightly per occupied bin; and at period close it all rolls up into an invoice you can push to QuickBooks in a click.

Because the event log is append-only and idempotent, the same work is never billed twice and never billed late — the number you send is the number you can defend.

ReceivingPutawayPickPackStorage / dayShipping markupReturnsValue-add
One platform

Every surface your operation runs on.

The floor, the back office, and your clients all work from the same source of truth — no exports, no reconciliation, no second login to keep in sync.

Run the whole warehouse

Ten working surfaces — dashboard, orders, fulfillment, inventory, receiving, billing, returns, labor, clients, and settings — built for the people who run fulfillment all day.

  • Order pipeline from received to shipped, with allocation and backorders
  • Receiving against ASNs and POs, straight to the right bin
  • Live billing — invoices, the charge ledger, and rate cards
  • Labor tasks and productivity by operator and activity
app.stowbill.com/dashboard
38
In flight
5
Open POs
3
Returns
5
Clients
9
Allocate
12
Pick
8
Pack
6
Ship
31
Shipped
Capabilities

A complete WMS, not a billing add-on.

The revenue capture is the edge. Underneath it is everything a real fulfillment operation needs to run day to day.

Audit-grade inventory

Stock is a ledger, not a number you overwrite. Every receipt, move, pick, and adjustment is an entry you can trace — balances are derived, never guessed.

True tenant isolation

Row-level security in the database plus per-client scoping means one customer can never see another’s data — isolation enforced by design, not by careful queries.

Multi-warehouse, multi-client

Run many clients across many sites from one tenant, each with its own catalog, rate card, suppliers, and stores — purpose-built for 3PL operations.

Integrations that fit

Shopify orders flow in and fulfillment flows back; EasyPost buys labels and tracking on ship; QuickBooks receives invoices and returns payments.

Labor & productivity

Assign and claim tasks on the floor, then measure units per hour by operator and activity — staffing decisions backed by what actually happened.

Returns, handled right

RMAs from request to disposition — restock, quarantine, or scrap — each posting the correct inventory and billing entry as it’s processed.

Everything included

The complete platform, module by module.

Every capability across inbound, inventory, fulfillment, billing, workforce, and access — each one wired to the same ledger and shipped in the box, not sold as add-ons.

Receiving & inbound

  • Shopify and manual order intake
  • ASN and PO receiving
  • Guided putaway to bins
  • Suppliers & purchase orders
  • Multi-warehouse routing

Inventory

  • Append-only transaction ledger
  • Materialised on-hand balances
  • Database-level oversell guard
  • Bin-to-bin transfers
  • Cycle counts & adjustments

Fulfillment & shipping

  • Allocation with backorders
  • Pick / pack / ship pipeline
  • EasyPost lowest-rate labels
  • Tracking write-back to Shopify
  • Multi-store fulfilment

3PL billing

  • Per-client rate cards
  • Append-only billable-event ledger
  • Nightly storage snapshots
  • Monthly invoice roll-up
  • QuickBooks invoice & payment sync

Labor & returns

  • Task assignment & claim
  • Productivity by operator & activity
  • RMA intake & approval
  • Dispositions: restock · quarantine · scrap
  • Every action billed automatically

Access & platform

  • 10-surface operator console
  • Branded customer portal
  • Offline-first RF scanner
  • Multi-tenant row-level isolation
  • Transactional outbox, idempotent writes
Built to be trusted

Multi-tenant by design, not by hope.

The architecture is the product. Isolation, correctness, and reliable integrations aren’t features bolted on — they’re how the system is built from the database up.

Isolation at the databasePostgres row-level security scopes every query to its tenant — a missed filter can’t leak data.
An idempotent ledgerInventory and billing are append-only. The same event can’t be double-counted or double-billed.
Integrations that don’t drop workExternal calls run through a transactional outbox, so a third-party hiccup never loses an order or a label.
Built on
Postgres 16Fastify 5Next.jsExpoBullMQDrizzle ORMTypeScriptPostgres 16Fastify 5Next.jsExpoBullMQDrizzle ORMTypeScript
Pricing

Flat and predictable. No per-order surprises.

You shouldn’t need a spreadsheet to forecast your software bill. Pick a plan by the size of your operation — not by how busy your month was.

Starter
For a single site getting onto a real WMS.
$399/mo
+ $25 / extra client
Start with Starter
  • 1 warehouse · up to 3 clients
  • Console, portal & RF scanner
  • Billing ledger & invoicing
  • Shopify & EasyPost
  • Email support
Most popular
Growth
For a 3PL running several clients across sites.
$899/mo
+ $19 / extra client
Book a demo
  • Up to 3 warehouses · 15 clients
  • Everything in Starter, plus:
  • QuickBooks invoice & payment sync
  • Labor & productivity
  • API access
  • Priority support
Scale
For high-volume and white-label operators.
Custom
volume & white-label terms
Talk to us
  • Unlimited warehouses & clients
  • White-label customer portal
  • SSO & custom roles
  • Onboarding & data migration
  • Dedicated support
Questions

The things teams ask first.

How does StowBill actually capture more revenue? +
Every operation on the floor emits a priced event the moment it completes, and storage is snapshotted nightly per occupied bin. Nothing waits on someone to remember to log it, so the charges that usually slip — accessorials, storage, value-add — land on the invoice automatically.
Can one client ever see another client’s data? +
No. Isolation is enforced in the database with row-level security and per-client scoping, so access is restricted whether data is reached through the console, the portal, or the API — it doesn’t depend on every query being written perfectly.
What does it connect to? +
Shopify for orders and fulfillment sync, EasyPost for shipping labels and tracking, and QuickBooks Online for invoicing and payment reconciliation — included, not paid add-ons.
Does the scanner work without a signal? +
Yes. The RF app is offline-first: receive, putaway, pick, and pack actions queue locally and sync when the connection returns, with idempotent keys so nothing is counted twice.
Can we run it under our own brand? +
On the Scale plan the customer portal is white-label, so your clients log in to your brand. Talk to us about reseller and white-label terms for your market.

See what you’ve been leaving on the table.

Bring a week of your own orders. We’ll show you, line by line, the charges StowBill would have captured.

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