Blog
Clear finances, out loud.
Practical ideas on fixed costs, cash flow, collections and financial decisions for companies in LATAM.
Contribution Margin: The Number That Tells You If Each Sale Pays Off
Many small businesses sell well but don't know which products actually generate profit. Here's how to calculate contribution margin and what to do with the result.
November 2, 2026The Sales Tax You Collect Isn't Yours (and It Can Sink You)
Many small businesses spend the sales tax they collect as if it were their own profit. Here's why that money is borrowed and how to avoid running out of cash when it's time to file.
October 30, 2026Can You Afford a New Hire? Here's How to Calculate It First
Hiring without doing the math is one of the fastest ways to drain a small business's cash. A practical guide to figuring out how much your business needs to grow to sustain one more salary.
October 28, 2026Let AI classify every transaction in your account
Classifying every payment and charge by hand eats hours and is always out of date. Here's how Miscostosfijos' automatic AI transaction classification works.
October 26, 2026How much should you pay yourself: the owner's salary in an SMB
If you don't set yourself a fixed salary, you don't actually know if your business is profitable. A practical guide to paying yourself without draining the company.
October 23, 2026Withholding tax: why you get paid less than you invoiced
Your client pays you less than you invoiced, and it's not a mistake. Here's how withholding tax works and how to keep it from throwing off your cash flow.
October 21, 2026Returns and warranties: the real cost almost no one calculates
A return doesn't just cost you the product. Here's how to calculate the real cost of returns and warranties, and three ways to lower it without hurting the customer.
October 19, 2026Accounts receivable: the money that's already yours but isn't in your bank
Every unpaid invoice past its due date is money you already earned but can't use. Here's how to organize your receivables and get paid on time without being pushy.
October 16, 2026How to pay your fixed costs without jumping between ten apps
Paying bills, phone top-ups and vouchers separately steals hours every month. Here's how to centralize your fixed-cost payments in one place (available in Colombia, expanding to more countries).
October 14, 2026Monthly bookkeeping close: the checklist that avoids year-end surprises
Closing your books every month, not just in December, saves you headaches and fines. Here's the simple checklist any small business can follow.
October 12, 2026Inventory that doesn't sell: the hidden cost of keeping it
Stock that doesn't turn over isn't a calm asset sitting in the warehouse — it's frozen cash. Here's how to measure it and what to do about it.
October 9, 2026Ant expenses: the small costs quietly eating your margin
No single small expense will sink you, but together they can cost more than one big mistake. Here's how to spot and control them in a small business.
October 7, 2026The AI squad that's already reviewing your finances
As a small business owner you play accountant, tax advisor, and pricing manager all at once. Meet Miscostosfijos' AI financial squad: five specialists working on your actual numbers.
October 5, 2026The tax calendar every SME should have (even if it changes by country)
Late-filing penalties aren't usually about bad intentions, they're about not having a calendar. Here's how to build yours, no matter which LATAM country you operate in.
October 2, 2026The Hidden Cost of Losing an Employee (and How to Calculate It)
When someone leaves, the expense isn't just their replacement's salary. Here's a simple way to calculate what staff turnover really costs you.
October 1, 2026Break-even point: how much you need to sell to not lose money
Many small business owners know if they sold a lot or a little, but not how much they need to sell just to cover costs. Here's how to calculate your break-even point, in plain terms.
September 28, 2026The dashboard that warns you before your bank account runs dry
Finding out your cash is running out when there's no room left to react is the worst possible moment. Here's how Miscostosfijos' central dashboard warns you early.
September 25, 2026Reconcile your bank account every month and avoid accounting surprises
If you never compare what your bank says against what your books say, sooner or later there's a gap nobody can explain. Here's how to reconcile without being an accountant.
September 23, 2026That client who's so much work: are they making you money or costing it?
Not every client is equally profitable. Use this practical guide to calculate what it really costs you to serve each one, and decide with data, not guilt.
September 21, 2026Sales are up but the bank account says otherwise: what's going on
Your business is billing more every month, but the bank balance doesn't follow. It's not bad luck — here's how to spot and fix the cash flow gap.
September 18, 2026Stop typing in invoices: how the Mail Hub works
Every invoice or receipt you type in by hand is time you won't get back. Here's how Miscostosfijos' Mail Hub classifies your expenses on its own, without you lifting a finger.
September 16, 2026Bookkeeping prep: the habit that saves you scares with your accountant
Scrambling for invoices and receipts at month-end costs your SMB time and money. Here's how to keep your bookkeeping prep current without being an accountant.
September 14, 2026How to calculate the real price of what you sell (without being an accountant)
Many businesses set prices by eye and end up selling below cost. This mini-guide shows you how to calculate the real price in a few steps.
September 13, 2026Why your fixed costs decide more than you think
Fixed costs are the quietest —and most dangerous— part of your operation. Here's how to read them before they read you.
September 12, 2026