CERNE Blog
Communications agencies
- Agency management software: what it needs and what the tool stack costsAgency software must link contract, piece, approval and invoice. See what to require, what the stack costs in 2026 and how to switch without losing data.
- Out-of-scope work: how an agency bills the extra without losing the clientOver 30% of agencies can't bill out-of-scope changes. See how to write the rule into the contract, log the request and get the extra onto the invoice.
- Client approval of social media posts: how to set up the workflow so pieces don't come back the day beforePost approval without delays: one approver per client, batches with a deadline, edits as comments and a record with name and time. See the schedule that works.
CERNE for Communications agencies
BPO and accounting
- Collecting documents from accounting clients: how to close the month without chasing the client three timesHow to organize document collection from accounting clients: deadline in the contract, WhatsApp reminders, checked receipts and who holds up the month-end.
- Tax reform at the accounting firm: what changes in 2026 and 2027 and how to get the new work into your feesIn 2026, IBS and CBS are in a test phase; in 2027, CBS replaces PIS and Cofins. See the new work for accounting firms and how to get it into your fees.
- Finance BPO software: what to check before signing and how to connect it to the accounting systemHow to choose finance BPO software in 2026: portfolio, reconciliation, NFS-e, WhatsApp, API, cost per client and how to switch without losing history.
Construction & engineering
- Construction cost control: where the money leaks and how to close off rework, purchasing and change ordersRework costs 2% to 9% of a project's value, and labor rose 9.23% in 2025. See where construction costs leak and how to control them per project.
- Construction daily log: what the rules require in 2026, what to record and how to do it without losing the end of the dayConstruction daily log in 2026: what Confea and Lei 14.133 require, what to record every day, who signs and how to build the RDO from pending items and photos.
- Construction management software: what to check before signing and how to integrate it with your construction ERPHow to choose construction management software in 2026: purchasing, inventory, daily log, finance per project, change orders, WhatsApp on site, API and cost.
CERNE for Construction & engineering
Events and classes
- Class management software: what it needs for classes, monthly fees and instructorsSoftware for a course school needs enrollment, attendance, monthly fees with Pix Automático, instructor payouts, online classes and NFS-e in one place.
- Event waitlist: how to set up the workshop queue and not lose a spotAn event waitlist runs on three rules: first come, first served, a short deadline to pay, and a spot held only until the Pix. See how to set up yours.
- Sympla fees in 2026: how much you keep from each ticket and how to sell on your own siteThe Sympla fee is 10% per ticket, with a R$ 3.99 minimum, plus 2% to 2.5% paid by the buyer. Compare it with other platforms and with your own site.
Food service
- iFood fees in 2026: how much is left from each order and how to calculate margin per channeliFood fees run from 12% to 23% per order, plus 3.2% on online payments. See how much is left on each channel and how to calculate the margin.
- Restaurant management software: what to check before signing and how to switch without losing dataHow to choose restaurant software in 2026: key features, the cost beyond the monthly fee, the iFood integration and how to switch without losing data.
- Restaurant recipe costing: how to build the recipe card, calculate COGS and make every sale deduct inventoryRestaurant recipe cards: the fields, the correction factor, plate cost and COGS, with a worked example and how to link the recipe card to inventory.
Hospitality and rentals
- Airbnb and Booking.com fees in 2026: what a property manager pays and when direct booking pays offThe Airbnb fee is 16% in Brazil, and Booking.com charges 18% in its partner program. See how much is left per channel and when to sell direct.
- Vacation rental cleaning: how to run a same-day turnover without losing reviewsVacation rental cleaning on a same-day turnover: house order, photo checklist, a separate inspection and the 14-day window to claim damage on Airbnb.
- Vacation rental software: what to compare before you sign up or switchHow to choose vacation rental software: channels, cleaning, owner payouts, cost per booking and how to switch without losing bookings.
CERNE for Hospitality and rentals
Law firms
- Collecting legal fees: what the OAB Code of Ethics allows and how to build the dunning scheduleWhen collecting legal fees, the OAB Code of Ethics bans duplicatas and protesting an invoice. See what is allowed, the right contract and the dunning schedule.
- DJEN deadlines: how to count and track deadlines under CNJ Resolution 569/2024Since May 16, 2025, deadlines run from publication in the DJEN. See how to count them, what changes with the Domicílio Judicial Eletrônico and how to track them.
- Law firm software: how to choose and what it costs in 2026Law firm software costs R$ 79 to R$ 3,790 per month in 2026. Compare Astrea, ADVBOX, Projuris and EasyJur on capture, users, finance and data export.
Health and wellness
- Patient no-shows: what they cost and how to reduce them with confirmation and depositsOn average, 23% of appointment slots end in no-shows. See what patient no-shows cost and how to reduce them with confirmation, deposits and a rebooking policy.
- Patient retention: how to prevent treatment dropout and organize follow-upPatient retention: at a physical therapy teaching clinic, 59% stopped before discharge. See where patients drop off and how to organize follow-up.
- How to switch clinic software without losing patient recordsTo switch clinic software without losing patient records: export everything first, check your council's retention period and run both systems in parallel.
Services
- How to price a service with labor hours, materials and travelTo price a service, add the real labor hours, materials and travel, then divide by 1 minus taxes, commission and margin. See the calculation.
- Online booking system: how to choose by what it does with no-shows, clashes and commissionThe right online booking system confirms the day before, takes a deposit with an accepted policy, books staff and room together and closes commission.
- Work order: what it needs to include, from the quote to the customer's signatureA work order records the request, the approved quote, the checklist, materials, photos and the signature. See the fields and what the CDC says.
Tourism and tours
- OTA commission for tours in 2026: how much each channel keeps and when to sell directAirbnb Experiences keeps 20% of each tour, and GetYourGuide, Viator and Civitatis negotiate per partner. See what's left per channel and how to check payouts.
- Tour canceled due to bad weather: refunds, rescheduling and the rule that prevents disputesTour canceled due to bad weather: when a refund is due, whether the agency can offer only credit, what the CDC says and how to record each passenger's choice.
- Software for inbound tour agencies: what to compare before signing and how to leave the spreadsheetHow to choose inbound tour agency software in 2026: the functions that matter, market list prices and how to leave the spreadsheet without losing bookings.
Retail and e-commerce
- ERP for e-commerce: what to check before choosing and how to switch without losing dataAn e-commerce ERP must unite orders, inventory, invoices and finance from every channel. See what to check, what it costs and how to switch without losing data.
- Mercado Livre and Shopee fees in 2026: how much is left from each sale and how to price per channelMercado Livre charges 10% to 19% per sale; Shopee, 14% to 20% plus a fixed fee per item. See how much is left on each channel and how to price.
- Physical and online store inventory: how to stop selling what you don't haveTo keep physical and online store inventory in sync, use a single balance per SKU, deduct at the moment of sale, hold items until payment and run cycle counts.
CERNE for Retail and e-commerce
Veterinary clinics
- Late payments at the vet clinic: approved estimate, deposit and collection within the rulesA vet clinic cannot hold a pet over a debt. See how an approved estimate, a deposit and collection backed by proof reduce late payments.
- Veterinary medical records: what CFMV Resolution 1.321/2020 requires and which forms the owner signsThe veterinary record logs each visit and is kept for 5 years. See what CFMV Resolution 1.321/2020 requires and the 10 forms in art. 10.
- Veterinary practice management software: what to check before signing and what it costs in 2026Vet clinic software needs a schedule, records, vaccines, hospitalization, POS and invoices. See what to check, what it costs and how to switch.
Gyms and wellness
- Gym member churn: how to retain members in the first three monthsGym member churn is decided early: 63% left before month 3 in a study in Rio. See the warning signs, who should act and how to measure it.
- How to switch gym management software without losing members or billingSwitching gym software means exporting the data, handling saved cards and running both systems until the 1st billing cycle. See the step-by-step.
- Wellhub and TotalPass payouts: how much a gym gets per visit and how to check itWellhub and TotalPass payouts depend on the contract and have a cap per member. See how to calculate the real value of each visit and reconcile the month.