01
Upload your sales export
Upload a CSV file from Shopify, WooCommerce, a marketplace, or another sales system. Your import stays attached to your organization workspace, so you can review it later when needed.
OSSora
Turn messy e-commerce exports into accountant-ready One Stop Shop VAT summaries
For small European Union e-commerce sellers preparing quarterly One Stop Shop VAT reports from Shopify, WooCommerce, marketplaces, or CSV exports.
Upload your sales export, map the right columns, review issues, separate European Union and outside-scope rows, and export a clean country-by-country summary for filing preparation or accountant handoff.
- Built for European Union cross-border sellers
- Works with CSV exports from shops, marketplaces, and internal systems
- Keeps rows reviewable before summaries are generated
- Helps prepare reports for review, not blind filing
- Owned and operated by Thicle Sàrl-S in Luxembourg
14-day free trial. Tax is added at checkout where applicable.
Q2 summary
EUR 42,680.00
GermanyEUR 12,400.00
FranceEUR 10,500.00
NetherlandsEUR 8,600.00
BelgiumEUR 6,700.00
CSV upload
Column mapping
Row review
Quarterly summary
Clean export
Problem
Still rebuilding your One Stop Shop VAT spreadsheet every quarter?
If you sell across European Union countries, your quarterly VAT preparation can quickly turn into a messy spreadsheet job. You export sales data, clean rows, fix countries, check dates, separate non-European Union orders, group totals by destination country, and then send a file to your accountant hoping nothing important was missed. OSSora is built for that exact workflow. Instead of rebuilding the same spreadsheet every quarter, you can upload your export, review the issues, and generate a cleaner summary faster.
OSSora helps when you are tired of:
- Cleaning Shopify, WooCommerce, marketplace, or CSV exports manually
- Grouping sales by destination country
- Checking whether rows belong inside or outside One Stop Shop reporting
- Dealing with repeated line-item rows
- Fixing blank continuation rows
- Reviewing ambiguous dates
- Sending messy files to your accountant
- Recreating the same quarterly report again and again
Solution
Clean filing-prep summaries from real-world sales exports
OSSora helps small European Union sellers turn messy exports into reviewable One Stop Shop VAT preparation reports. You stay in control. OSSora does not guess silently, hide problem rows, or pretend to replace your accountant. It helps you prepare the data before review.
Workflow
How OSSora works
02
Map or confirm your columns
Match the columns OSSora needs, such as order date, destination country, gross amount, VAT amount, currency, and order reference. Smart header suggestions and saved templates help reduce repeated work on future imports.
03
Review warnings and row-level issues
Before generating a summary, OSSora shows rows that may need attention. You can review missing dates, ambiguous formats, unrecognized countries, blank continuation rows, and parsing issues before relying on the output.
04
Generate your quarterly summary
Create a country-by-country quarterly summary with European Union One Stop Shop totals separated from outside-scope rows.
05
Export a clean handoff file
Download a clean CSV report for your own review or to send to your accountant.
Trust and control
Review-first workflow, not blind automation
OSSora is designed for cautious filing preparation. It helps organize and summarize your data, but it keeps you in control before anything is exported.
Rows stay visible
Uploaded rows can be inspected, corrected, or excluded before summary generation.
Warnings are surfaced
Potential issues are shown before you rely on the result.
Outside-scope rows are not hidden
Non-European Union rows stay visible but separate.
Preparation, not filing
OSSora helps prepare reviewable summaries. It does not provide tax advice or submit returns.
Who it is for
Built for small European Union sellers who:
Sell across European Union borders
Use Shopify, WooCommerce, marketplaces, or CSV exports
Prepare quarterly One Stop Shop VAT summaries
Work with an accountant or bookkeeper
Want cleaner data before filing preparation
Still use spreadsheets for quarterly sales summaries
Need a repeatable process instead of starting from scratch every quarter
For accountants
Stop receiving messy e-commerce exports from clients
OSSora can also help accountants and bookkeepers who support small e-commerce sellers. Instead of asking clients to send raw sales exports, you can ask them to prepare a cleaner country summary first. This can help reduce back-and-forth, make review easier, and give both sides a clearer starting point. OSSora does not replace professional accounting judgment. It helps organize the sales data before review.
Not for
OSSora is not:
Tax advice
A VAT filing submission service
A full bookkeeping system
An Enterprise Resource Planning system
A marketplace tax engine
A replacement for an accountant
A guarantee that your figures are correct without review
Use OSSora to prepare and review data. Use professional advice when needed.
Real-world exports
Built for messy CSVs, not perfect demo files
Real e-commerce exports are rarely clean. OSSora is designed around the kind of files sellers actually deal with every quarter.
Handles repeated line-item rows
Some Shopify-style exports repeat order references and include continuation rows with blank order-level fields. OSSora keeps these rows visible and helps prevent them from distorting totals.
Separates European Union and outside-scope destinations
Orders going to recognized non-European Union destinations remain visible, but they are separated from One Stop Shop grouping totals.
Flags ambiguous dates
OSSora surfaces ambiguous date formats instead of silently guessing the day and month order.
Creates cleaner accountant handoff
Instead of sending your accountant a raw export full of unclear rows, you can send a cleaner quarterly summary with issues already reviewed.
Workflow proof
From messy export to reviewable summary
Example upload: 76 sanitized source rows, 75 detected columns, 8 One Stop Shop countries, and 2 outside-scope countries. OSSora helps convert that upload into a reviewable quarterly summary showing country totals, gross values, VAT amounts, net amounts, transaction counts, and outside-scope rows.
76
Sanitized source rows
75
Detected columns
8
OSS countries
2
Outside-scope countries
Sanitized upload preview
| Order | Date | Destination | Total | Signal |
|---|---|---|---|---|
| ORD-003 | 2023-06-05 | United Kingdom | €58.19 | Primary order row |
| ORD-003 | 2023-06-05 | Blank | Blank | Continuation line item |
| ORD-004 | 2023-06-04 | Belgium | €64.80 | OSS-scope row |
Validation and review signals
- Repeated order rows kept visible without double counting
- Blank continuation rows excluded from blocking issues
- Recognized non-EU destinations separated from OSS totals
- Export output split into OSS and Outside OSS scope sections
Export-ready summary preview
| Section | Country | Gross | VAT | Transactions |
|---|---|---|---|---|
| OSS country totals | BE | €126.94 | €17.51 | 1 |
| OSS country totals | DE | €96.26 | €13.29 | 2 |
| Outside OSS scope | GB | €635.72 | €0.00 | 7 |
| Outside OSS scope | US | €151.86 | €0.00 | 1 |
Core features
What you can do in OSSora
CSV upload
Upload sales exports from stores, marketplaces, or internal systems.
Smart column mapping
Match export columns to the fields needed for One Stop Shop VAT preparation.
Saved mapping templates
Save mappings for repeat imports from the same source.
Row validation
Review missing dates, unrecognized countries, and amount parsing issues.
Country normalization
Normalize practical European Union country names and country codes.
Quarterly summaries
Generate summaries grouped by standard One Stop Shop quarters.
Country totals
See gross, VAT, net, and transaction totals by destination country.
Outside-scope separation
Keep recognized outside-scope destinations visible without mixing them into One Stop Shop totals.
CSV export
Download a clean filing-prep report for accountant handoff.
Billing visibility
See plan status, usage, limits, and trial details inside the product.
Pricing
Simple pricing for sellers preparing quarterly summaries
Starter
€29 + VAT / month
For smaller sellers with lighter monthly usage.
- 10 uploads per month
- 3 saved mapping templates
- 90 days import history
- standard email support
- 14-day free trial
Founder
€39 + VAT / month
Early-adopter pricing with Growth access.
- same features as Growth
- first 50 users only
- grandfathered while active
- priority email support
- 14-day free trial
Growth
€79 + VAT / month
For active sellers with higher volume and repeat reporting needs.
- 100 uploads per month
- 20 saved mapping templates
- unlimited import history
- priority email support
- 14-day free trial
Tax is added at checkout where applicable.
Prices exclude VAT. Tax is added at checkout where applicable. Plans include a 14-day trial. OSSora is filing-preparation software, not tax advice or a filing submission service.
Founder plan
Founder pricing for the first 50 users
Founder gives early users the same access as Growth at a lower monthly price. It is limited to the first 50 users and stays grandfathered while your subscription remains active. If canceled, Founder pricing is lost.
same access as Growth
limited to the first 50 users
grandfathered while active
lost if canceled
Launch offer
Early-adopter pricing for the first 50 users
Founder gives early users the same access as Growth at a lower monthly price. It is limited to the first 50 users and stays grandfathered while your subscription remains active. If canceled, Founder pricing is lost.
FAQ
Frequently asked questions
Is OSSora tax advice?
No. OSSora is filing-preparation software. It helps organize and summarize uploaded sales data, but you remain responsible for reviewing figures and getting professional advice where needed.
Does OSSora file VAT returns for me?
No. OSSora does not submit One Stop Shop VAT returns or other tax documents. It prepares summaries for review and accountant handoff.
Who is OSSora for?
OSSora is built for small European Union e-commerce sellers preparing quarterly One Stop Shop VAT summaries from Shopify, WooCommerce, marketplace, or CSV exports.
Can accountants use OSSora?
Yes. Accountants and bookkeepers can use OSSora to help clients prepare cleaner sales summaries before review.
What can I do during the free trial?
You can upload a CSV file, map columns, validate rows, review issues, generate a summary, and export a filing-prep report within your selected plan limits.
Is tax included in the listed price?
No. Prices exclude VAT. Tax is added at checkout where applicable.
What happens to non-European Union sales?
Recognized outside-scope destinations remain visible, but they are separated from One Stop Shop totals.
What if my CSV has messy rows?
OSSora is built for real-world CSV exports. It can surface repeated rows, blank continuation rows, ambiguous dates, unrecognized countries, and parsing issues for review.
Who owns OSSora?
OSSora is a product of Thicle Sàrl-S, Luxembourg.
Review your next export before sending it to your accountant
Start your 14-day trial, upload a CSV export, review row issues, and generate a cleaner filing-prep summary before your next accountant handoff.
OSSora is a filing-preparation tool. It does not provide tax advice or file tax returns for you.