An organized foundation.
Bring your clients' data together and keep the information available to manage the tax routine.
Brazil's Tax Reform has begun. Is your tax data ready?
IBS and CBS are already on invoices. Lastro SI reads the IBS/CBS group from your XML files, checks the test-year rates and cross-checks the base against PIS and Cofins, so your team reaches 2027 with organized data and discrepancies resolved.
Reform IBS and CBSData managementAudit and cross-checksPVA validator100+ reports available
01 / A DEEPER VIEW
Cross-check data.
Deepen your analysis.
Support audits, forensic reviews and consulting work with structured tax information. Explore the data to review transactions and investigate potential credits using your own criteria.
DATA CROSS-CHECKING
Find discrepancies.
Investigate the causes.
Compare information and spot discrepancies that deserve a closer look.
Connect the dotsYOUR CRITERIA. YOUR RULES.
Define the rules
for each analysis.
Apply rules you configure to the reports. Investigate results within the context of each client.
02FROM SPED TO ANALYSIS
More than 100 reports
to explore your data.
More than 100 reports to review information on screen, deepen your reviews and take the data to Excel when the analysis needs to go further.
See the data up close 03A CONNECTED TAX ROUTINE
Management, audit
and PVA Validator.
The tools of your tax routine brought together with Lastro SI's reports and analysis.
See the process 0402 / INSIDE THE SYSTEM
Explore the reports.
Check the details.
Pick a report, set the period and review the information on screen. Meet the interface that gives structure to your analysis.
INTERFACE ILLUSTRATIONS · FICTITIOUS DATAINFORMATION IN PERSPECTIVEYour whole portfolio
Your whole portfolio
on a single screen.
The status of each company, the documents received, open issues, tax risks and filings for the period, so you know where to act first.
01 / 03Pick the report.
Set the period.
Find the report in the SPED and XML catalog, set the period and the columns. View it on screen or export it to Excel.
Every document.
Every item in detail.
Look up items, search documents by number, access key or text and see discrepancies right away. Take the analysis further in Excel.
NF-e / TAX DOCUMENT MANAGEMENT
NF-e lookup and management in one place.
Centralize, validate and track electronic invoices (NF-e) directly from SEFAZ.
Talk to our teamCentralize lookups.
Bring electronic invoices together in one place and keep documents at hand in your tax routine.
Validate the information.
Look up and validate your NF-e to support the review of your company's documents.
Track your NF-e.
Keep SEFAZ lookups and tracking integrated with the management of your tax documents.
03 / WORK TOGETHER. FROM ANYWHERE.
Work as a team.
From anywhere.
Work from anywhere in the world with your clients' data at hand. With a computer and internet access, you can open Lastro SI and pick up your analysis.
Share ideas in the chat.
Talk to the team, share viewpoints and align the work through the chat built into the system.
Share files.
Send and receive files in the chat. Keep document exchange next to your team's conversations.
Keep your clients at hand.
Access your clients' data gathered in the system and review the information wherever you are.
ALL YOU NEED IS
Open Lastro SI A computer +and internet.
04 / HOW IT WORKS
From the tax file
to data analysis.
Lastro SI structures the information so you can focus on what requires knowledge and interpretation.
01 / IMPORTOrganized tax data.
Data from your SPED files organized for lookup and analysis.
05 / DIFFERENT PERSPECTIVES. THE SAME CLARITY.
Accounting, consulting
and tax management.
MORE VISIBILITY IN YOUR ROUTINEData for every client.
Data for every client.
A more organized routine.
Structure tax information and apply your review criteria. A clearer foundation to follow different companies and dig into what needs attention.
- Reports to support tax reviews
- Rules configured by the professional
- Export to continue the analysis in Excel
ABOUT
Why Lastro SI?
“Lastro” is Portuguese for what gives something solid backing. Our purpose is to give structure to data, depth to analysis and connection to your team's work.
Analysis with criteria.
Explore reports, cross-check information and apply rules you define to support audits and reviews.
A connected team.
Share ideas and files in the chat and work from anywhere with a computer and internet.
Lastro SI brings management, audit, PVA Validator and reports together in a platform focused on data and analysis.
Extrator FiscalLastro SI
06 / TAX REFORM
A solution ready to keep up with the evolution of Brazil's Tax Reform.
Lastro SI already reads IBS and CBS on your invoices.
With organized data, reports and analysis led by your team, follow the evolution of the Tax Reform and bring more context to your tax routine.
WHAT CHANGES IN CONSUMPTION TAXES
CBS and IBS.
Understand the transition.
- CBS
- Contribution on Goods and ServicesA federal tax that replaces PIS and Cofins.
- IBS
- Tax on Goods and ServicesA state and municipal tax that gradually replaces ICMS and ISS.
The stages of the Tax Reform
2026 2033- 2026
Testing phase
CBS and IBS testing begins. Obligations follow the official calendar for each tax document.
- 2027 to 2028
CBS in operation
PIS and Cofins give way to CBS in 2027. IBS remains in its initial stage.
- 2029 to 2032
Gradual transition
ICMS and ISS are progressively reduced while IBS gains share.
- 2033
New model in full
ICMS and ISS are fully replaced by IBS.
Organize the data.
Prepare your analysis.
- Organize the foundation. Gather your clients' tax data for lookup.
- Deepen your reviews. Explore reports, cross-checks and rules you define.
- Connect the team. Share ideas and files to keep the work moving.
General summary of the transition. Deadlines and obligations vary by operation and applicable rules. Information checked on .
07 / LASTRO SI PLANS
Choose the plan
for your team.
Every feature in all three plans. Save up to 33% on the monthly fee, with 5 users included and 500 free NF-e lookups per firm.
01 /3 MONTHS
Quarterly
Start with every feature on a 3-month cycle.
R$18,000.00/month
On the quarterly plan.
Equivalent to R$ 3,600/user/month, considering the 5 included users.
Every feature for 3 months
5 users included
500 free NF-e lookups per firm
Additional user: R$ 350.00/month
Subscribe in the app Book a demo02 /6 MONTHS
Semiannual
Keep your analysis going and lower your team's monthly cost.
R$15,000.00/month
On the semiannual plan.
Equivalent to R$ 3,000/user/month, considering the 5 included users.
Save R$ 3,000/month · 17%
5 users included
500 free NF-e lookups per firm
Additional user: R$ 350.00/month
Subscribe in the app Book a demo03 /12 MONTHS
Annual
Best valuePlan the year with every feature and the biggest savings of all plans.
R$12,000.00/month
On the annual plan.
Equivalent to R$ 2,400/user/month, considering the 5 included users.
Save R$ 6,000/month · 33%
5 users included
500 free NF-e lookups per firm
Additional user: R$ 350.00/month
Subscribe in the app Book a demoFeatures included
in every plan.
- Client data management
- Smart import (SPED, XML, ECD, ECF and more)
- Audit and data cross-checks
- PVA Validator
- SPED rectification (EFD ICMS/IPI and Contribuições)
- More than 100 tax reports
- Summary of ICMS, IPI, PIS and Cofins credits
- IBS and CBS reading in invoices
- Missing XML and invoice preview (DANFE)
- PIS and Cofins calculation statement
- Taxpayer dashboard and portfolio view
- Analysis rules defined by you
- Report export to Excel
- Chat and file sharing
- Access from anywhere in the world
- NF-e lookup and retrieval (500 free lookups)
Each firm gets 500 free NF-e lookups. After the 500 lookups, NF-e retrieval from SEFAZ is charged according to the batch you choose.
Subscription and plan selection are done directly in the app.
Monthly prices. All plans include 5 users; each additional user costs R$ 350.00/month.
Savings calculated on the fee of the quarterly plan, R$ 18,000.00, without additional users.
08 / WHAT YOU NEED TO KNOW
Frequently asked
questions.
Learn about the platform
and the role of your analysis.
How do I book a demo?
Send a request to [email protected] with your name, company and a preferred day or time. Our team will arrange the demo details with you by e-mail.
How do I subscribe to Lastro SI?
Subscription is done in the app itself. Click “Subscribe in the app” on the plan you want to open the platform and subscribe there.
Is Lastro SI the new name of Extrator Fiscal?
Yes. Lastro SI is the new brand of the system formerly called Extrator Fiscal, now at lastrosi.com.br. Customers, data and access stay the same, and the “Sign in” button takes you to the platform.
Can I access the system from anywhere?
Yes. With a computer connected to the internet and your Lastro SI access, you can review your clients' data and work from anywhere in the world.
Can I chat and share files with my team?
Yes. Lastro SI has a built-in chat to share ideas and files with your team, right inside the system.
How many users are included in each plan?
All plans include 5 users. Monthly fees are R$ 18,000.00 on the quarterly plan, R$ 15,000.00 on the semiannual plan and R$ 12,000.00 on the annual plan.
Can I add more users to the team?
Yes. Beyond the 5 included users, each additional user costs R$ 350.00 per month on any plan. This amount is added to the fee of the chosen plan.
Which features are included in the plans?
All plans include client data management, smart import, audit and cross-checks, PVA Validator, SPED rectification, more than 100 tax reports, credit summary, IBS and CBS reading, analysis rules defined by you, export to Excel, chat and file sharing. Client data is kept together in the system, accessible from anywhere on a computer connected to the internet.
Is Tax Reform Apuração Assistida included in the plans?
No. Tax Reform: Apuração Assistida is a separate module. It is contracted through contact with Waytax, after our team reviews your firm's operation. Lastro SI plans already include reading IBS and CBS on invoices.
Does the platform generate or transmit SPED files?
The focus is extracting and analyzing information from imported tax files. Lastro SI supports the investigation with reports and analysis rules; it is not presented as a system for generating or transmitting SPED files.
How do the 500 free NF-e lookups work?
Each firm gets 500 free NF-e lookups on any plan. After the 500 lookups, NF-e retrieval from SEFAZ is charged according to the batch you need.
Who defines the analysis criteria?
The professional configures the rules applied to the reports. Results must be interpreted considering the company's context and the rules and exceptions relevant to each analysis.
Can I work with the data in Excel?
Yes. Lastro SI offers on-screen reports and export to Excel, so you can continue your analysis.
Do the screens shown use real information?
No. The screens on this site are illustrations of the interface with fictitious data. This presentation page does not access the client database or the production system.
MEET THE SYSTEM WITH OUR TEAM.
See Lastro SI
in action.
Discover the management, audit, PVA Validator and reporting features in a demo for your team.
Book by e-mail [email protected]
Send your name, company and availability. We will arrange the date and time by e-mail.
09 / TALK TO OUR TEAM
Contact us.
Questions about the platform or the plans? Tell us what your team needs and let's talk.
Send your message
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