How to Calculate Your SEO Budget: A Complete Guide for Brazilian Companies

The Digital Marketing Challenge

Digital is the main marketing channel for many companies today.

Many owners and executives still struggle to budget properly for online marketing.

The SEO budget can be complex and is influenced by factors like project scope, industry competition, and the specific services needed. There’s no universal calculator for determining costs.

This article explores the main components of SEO pricing and how to calculate and plan your budget.

What Companies Don’t Understand About Investing in SEO

SEO is an area where you really do get what you pay for. Investing properly in SEO services can significantly impact your online presence and your business’s growth.

According to recent data, more than half of all SEO professionals work with monthly budgets ranging from R$2,500 to R$25,000, with 28.6% reporting budgets in the R$5,000-R$25,000 range.

Many business owners are reluctant to invest in SEO, often because they don’t understand how search marketing works and are too busy running their businesses to learn about SEO.

Most industries follow a standardized, step-by-step process to achieve specific results.

Many business owners mistakenly assume SEO works the same way, treating it as a commodity.

This misconception leads them to fall for low-cost offers like “guaranteed first page” services for R$500/month from spammers and scammers who never deliver meaningful results.

The Cost of Cheap SEO

I take part in several digital marketing groups on Facebook. It’s genuinely alarming how many beginners pose as SEO professionals and take on clients.

It’s common to see questions like: “I just landed a client who wants to rank for [keyword x] — how do I do that?”

A second common problem is people using link schemes, specifically private blog networks and third-party pages known as parasite SEO, practices that directly violate Google’s spam policies, without ever explaining the risk to clients. Many use AI to mass-produce content with no fact-checking.

That said, AI can be a powerful tool when used ethically in SEO.

AI helps automate data analysis, identify patterns, and optimize content creation and optimization, which in turn helps reduce SEO costs.

If business owners were only wasting money by hiring an incompetent SEO, that would already be bad enough. Unfortunately, the collateral damage of “cheap SEO” can run much deeper.

It can attract a Google penalty and virtually wipe out a site’s visibility on the web.

Business owners should remember that they are ultimately responsible for any SEO work performed on their site. They should discuss the specific tactics service providers use before entering into an agreement.

Managing Your Resources

With Google using more than 200 (and probably exponentially more) ranking factors, it’s easy to feel overwhelmed and paralyzed.

The good news is that if you focus on just three factors, you can still get excellent results, regardless of your niche.

Here’s what you need to pay attention to:

Information Architecture

Your site should:

Be crawlable and accessible to search engines.
Follow Google’s Webmaster Guidelines for SEO best practices.
Be optimized for a high-quality user experience (paying close attention to Core Web Vitals).
Render cleanly on mobile devices, tablets, and desktops.

Content

Your site’s content should comply with the best practices published in the Search Quality Rater Guidelines, with an emphasis on:

Being unique and offering value.
Matching search queries.
Satisfying user intent.
Being high quality.
Satisfying the current content algorithm.

Backlinks

They must be natural. Avoid popular link schemes like private blog networks (PBNs) and paid guest posts. Instead, focus on building real links from thematically relevant sites with high-quality content.
Quality is essential: a smaller number of high-trust, high-authority relevant links can outperform a large volume of lower-quality links.

You Manage What You Measure — Set Goals

Before setting a budget, you need to define specific goals for a campaign.

Your goals should include measurable outcomes, a defined timeline, and a real measure of success.

At one point, success was measured solely by keyword rankings. While SERPs remain an important metric, they’re not the most important one.

I’d argue the most important metrics are the ones that directly impact the bottom line. Organic sessions, goal conversions, and revenue fall into that category.

Setting goals could include improving organic sessions by X%, increasing conversions by Y per month, and/or increasing revenue by Z%.

When setting goals, a few things are worth keeping in mind.

First, they need to be achievable. Ambitious goals are good, but impossible benchmarks can actually work as a disincentive.

Equally important: you need to give the campaign time to work.

According to Google,

“…in most cases, SEOs need four months to a year to help their business implement improvements and then see potential benefits.”

Building a Budget

Your goals will determine which tactics are needed for success. That, in turn, establishes a framework for developing an action plan and the budget needed to support it.

That brings us back to positioning and attention to the factors that actually move the needle.

How does your information architecture compare to your competitors’?
How does your content strategy compare to the competition?
How does your backlink profile compare to the top-ranking sites?

The answers to these questions will determine priorities and the amount of work needed to hit your goals.

In many cases, the actual work performed will be the same regardless of budget level. The difference is in the volume of work carried out.

If you add twice the content and twice the links at budget level “B” compared to budget level “A,” you’re more likely to reach success sooner with the higher budget.

That said, the right budget is one you can afford, without losing sleep, for a minimum of 6 and ideally 12 months.

It takes time to properly plan, implement, and adjust a campaign to evaluate its success.

Also, remember that the smaller the budget, the longer the journey.

How Much Can You Expect to Spend on SEO?

To run a local campaign, you could budget between R$1,000 and R$5,000 per month, the most common budget range among SEO professionals surveyed in 2023.

The budget will likely be higher for a national or international campaign, with many SEO professionals working with budgets exceeding R$50,000 per month for broader campaigns.

Some companies offer a “trial package” at a lower price with no contract. This lets prospective clients test their services while minimizing risk.

There are a few options if you can’t afford to hire a top-tier SEO professional. The most common is a one-time SEO site audit with actionable recommendations.

Simply fixing your site will often lead to a significant increase in organic traffic. Content development and keyword analysis are other areas where you can get help from a professional for a one-time flat fee.

Another option is to become an expert yourself and do it in-house.

Calculating Organic Search ROI

Example: selling a phone

ROI Report

Metric	Value
Number of new customers acquired via organic search (month)	10
Average net income (profit) per order	R$500
Total profits from new organic search customers (month)	R$5,000
Monthly marketing budget (expense)	R$12,500
ROI (Profits ÷ Spend – 1)	-60%

The flaw in the calculation above is that it doesn’t account for the lifetime value of a new customer.

Online retailers need repeat business to grow. By not factoring in the lifetime value of a new customer, the true ROI is grossly underestimated.

The right way to calculate ROI is to incorporate lifetime value into the calculation.

To calculate the cost of SEO and its true ROI, use this formula:

Average lifetime profits of new customers acquired in a month divided by monthly organic marketing spend.

Calculating Organic SEO ROI Assuming Lifetime Value

Same example: selling a phone

Lifetime ROI Report

Metric	Value
Number of new customers acquired via organic search (month)	10
Average net income (profit) per order	R$500
Total profits from new organic search customers (month)	R$5,000
Average number of orders per customer over a “lifetime”	5
Total average lifetime profit	R$25,000
Monthly marketing budget (expense)	R$12,500
ROI (Lifetime profits ÷ Spend – 1)	200%

As you can see, this single variable makes a huge difference in how ROI is reported.

SEO Campaigns Are Long-Term Investments

Unlike PPC, an organic search campaign won’t produce immediate results.

A comprehensive SEO campaign involves a combination of technical SEO, content marketing, and link building. Even when executed perfectly, it takes time for Google to recognize and reward these efforts.

That said, the traffic gained from these efforts is often the most consistent and highest-converting of any channel.

Once you’ve calculated the value of the investment, the next challenge is usually convincing decision-makers — see our guide on how to make the case for and secure that budget internally.