Tally Integration Services
Stop double-entry into Tally, or move beyond it on your terms.
We connect your sales, stock and billing systems to your accounting books, or migrate to Business OS when Tally is the bottleneck.
- No double entry
- GST-ready
- Migrate when ready
Free 30-minute call with a senior specialist. Reply within one business day. Based in Jaipur, working with businesses across India.
- Discovery callFree 30 minutes with a senior specialist
- Scoped first phaseWritten scope, timeline and fixed price
- Build with weekly demosWorking software you can see every week
- Launch and supportGo-live with your team ready, then ongoing support
What is Tally integration?
Tally integration connects your order, billing and inventory systems to your accounting books so entries are not typed twice. Stack18 builds the integration where Tally should stay, and offers Business OS, a GST-ready ERP from ₹2.8L one-time, when it is time to outgrow Tally, Excel and WhatsApp.
You need this when…
Tap the ones that apply to you.
Tally Integration Services, end to end.
Each capability is delivered by the same team on the Agentic SDLC, with your approval at every critical step.
Sales to books
Invoices post automatically.
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Inventory to books
One stock record.
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Collections
Receivables in view.
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E-commerce and POS
Channels to books.
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Migration
Move off when ready.
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Monitoring
Know when it breaks.
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A typical engagement, step by step.
Senior people lead every phase. Specialised AI agents on the Agentic SDLC handle the repetitive work, and nothing ships without your approval.
Discover
Map the current process, data and priorities.
Design
Agree modules, integrations and rules.
Build
Configure and extend in weekly demos.
Launch
Data migration, training and go-live support.
Start small. Scale when it works.
Every engagement begins with a short, fixed-price step so you can judge the fit before committing further. See pricing.
Integration Discovery
Teams deciding what to build first.
- Duration
- 1–4 weeks
- Pricing
- Fixed price
- Scoped plan and timeline
- Team and fixed price
- Process map or prototype
Business OS Launch
Teams that want to go live fast.
- Duration
- 3–4 weeks
- Pricing
- From ₹2.8L, one-time
- 9 modules
- Data migration
- Training
Custom accounting integration
Needs that a ready-made system does not cover.
- Duration
- 4–16 weeks
- Pricing
- Fixed price per phase
- Weekly working demos
- Senior team accountable
- 30 days hypercare
What we have shipped, and what a typical engagement looks like.
Delivered projects link to the full case study. Illustrative scenarios describe typical engagements and are not named client results.
Distributor
- Challenge
- Invoices re-typed in Tally.
- What we do
- Invoice sync with exception queue.
3–4 weeks
Retailer
- Challenge
- Stock and books differ.
- What we do
- Stock sync and valuation checks.
4–6 weeks
Ethnic wear D2C, Jaipur
- Challenge
- A ₹100+ crore brand needed website, app and back office to share one catalogue and one record of stock and orders.
- What we do
- Nine specialists built website, mobile app and ERP on one connected foundation in two-week sprints.
3 months
Read the case study →Free accounting integration review
Tell us your tools and Tally setup. We outline integration or migration.
- Sync map
- Keep vs replace
- Timeline
We agree targets before we start.
Every engagement has a baseline and a target on the measures that matter to you, reported at every read-out.
Tally Integration Services questions.
Can we keep Tally?
Yes, we integrate where needed.
Can we replace it?
Yes, Business OS.
GST?
Yes.
Cost?
Business OS from ₹2.8L.
Timeline?
3–4 weeks for Launch.
Data migration?
Validated runs.
Let's scope your Tally Integration Services project.
Tell us where you are and where you want to be. A senior specialist will reply within one business day with next steps.
- Free 30-minute consultation
- Indicative estimate after the call
- NDA available on request