Sales & CRM

The importance of accurate quantitative sales forecasting

13 min read


In this article, we will discuss the impact of inaccurate sales forecasting, the benefits of accurate sales forecasting, and the key components of quantitative sales forecasting that can help you make informed decisions about your sales strategies and future growth.

Quantitative sales forecasting is a method that businesses use to predict future sales by analysing past sales data and other quantitative factors such as historical growth rates, seasonal trends, and external factors that affect sales volume. 

Accurate sales forecasting is crucial for businesses to make informed decisions about sales activities, future revenue, and overall sales process.

The impact of inaccurate sales forecasting can be significant and detrimental to a business. For example, overestimating sales can result in overproduction and inventory buildup, while underestimating sales can lead to missed revenue opportunities and stock shortages. 

Therefore, having an accurate sales forecast is essential for business planning, budgeting, and decision-making.


Quantitative forecasting vs qualitative forecasting

Forecasting can be done quantitatively or qualitatively. Quantitative forecasting uses numerical data to predict future sales, while qualitative forecasting relies on expert opinions and subjective judgments. Both methods have their advantages and disadvantages, and companies must choose the most suitable approach for their needs.

Quantitative forecasting provides objective data-driven predictions that can be more reliable than qualitative methods. It is based on historical data and mathematical models that analyse trends and patterns to predict future sales. 

This method is especially useful for companies with a large customer base and a long sales history. Quantitative methods allow businesses to identify trends, seasonality, and cyclical patterns that can affect future sales. However, this approach does not take into account external factors that can affect sales, such as changes in the market or consumer behaviour.

Qualitative sales forecasting, on the other hand, is based on subjective judgments and expert opinions. This method is useful when historical data is not available or when external factors significantly affect sales. 

Qualitative forecasting relies on the expertise of sales teams, industry experts, and customer surveys to predict future sales. This approach allows businesses to consider factors such as consumer behaviour, economic trends, and competitor activity that can impact sales. However, qualitative forecasting is less objective and can be influenced by personal biases, making it less reliable than quantitative methods.

Choosing between quantitative and qualitative forecasting methods depends on a company's specific needs and circumstances. For instance, a company with a long sales history may benefit from using quantitative methods to predict future sales, while a startup with no sales history may need to rely on qualitative methods. 

It is also possible to use a combination of both methods to obtain a more accurate forecast. Companies can use quantitative methods to establish a baseline forecast and then use qualitative methods to adjust it based on external factors.

The impact of inaccurate sales forecasting

Accurate sales forecasting is critical for companies to make informed decisions about future sales and revenue. However, when sales forecasts are inaccurate, businesses can suffer negative consequences that can have a significant impact on their overall performance.

Some negative consequences of inaccurate sales forecasting include:

  • Overestimating or underestimating demand: Inaccurate sales forecasts can lead to overproduction or underproduction, which can result in missed sales opportunities or excess inventory that ties up valuable resources.


  • Misallocation of resources: If a company expects higher sales than actually materialise, it may invest in more marketing campaigns, hire more salespeople, or purchase additional equipment or supplies. This can result in overspending and wasted resources that could have been allocated more effectively elsewhere.


  • Reduced profitability: Inaccurate sales forecasting can lead to pricing decisions that are not in line with market demand. For example, if a company underestimates demand, it may reduce prices to stimulate sales, which can result in reduced profitability.


  • Strained relationships with suppliers: Inaccurate sales forecasting can lead to inventory shortages that can cause delays in fulfilling orders. This can strain relationships with suppliers who may lose trust in the company’s ability to accurately forecast demand.


Potential risks for companies that rely on inaccurate sales forecasts include:

  • Decreased competitiveness: Inaccurate sales forecasts can lead to missed sales opportunities, which can result in a loss of market share to competitors who are better able to accurately forecast demand.


  • Reduced investor confidence: Inaccurate sales forecasts can lead to missed revenue targets, which can erode investor confidence and affect a company’s ability to raise capital.


  • Adverse business outcomes: Inaccurate sales forecasting can lead to adverse business outcomes such as missed revenue targets, lower profitability, and a decrease in shareholder value.


As such, the impact of inaccurate sales forecasting can be significant, highlighting the importance of accurate forecasting for businesses to make informed decisions about their future sales and revenue.

Benefits of accurate sales forecasting

On the other hand, accurate sales forecasting can have a significant positive impact on a business. Here are some of the key benefits of accurate sales forecasting:

Improved decision-making for companies

Sales forecasting provides critical insights that help businesses make informed decisions. Accurate forecasts can help businesses anticipate future demand, identify potential roadblocks, and plan for contingencies. 


With accurate sales forecasts, businesses can make strategic decisions about product development, marketing campaigns, and resource allocation, which can help to ensure long-term success.

Enhanced sales team performance

Accurate sales forecasts can help sales teams set realistic goals and targets, which can boost motivation and drive performance. 

By having a clear understanding of expected sales volume, sales teams can prioritise their efforts, focus on high-value opportunities, and allocate their time and resources more effectively.

Better resource allocation

Accurate sales forecasts allow businesses to allocate resources more effectively, which can help to optimise operations and reduce costs. 

By having a clear understanding of expected sales volume, businesses can make informed decisions about staffing, inventory management, and supply chain logistics, which can help to ensure that they are prepared to meet demand.

Improved sales process

Accurate sales forecasts enable businesses to improve their sales process. By understanding the sales cycle, businesses can identify areas where they can improve efficiency, streamline workflows, and reduce costs. 

Accurate forecasts can help businesses to optimise their sales process, from lead generation and prospecting to closing deals and retaining customers.

Increased revenue and profitability

Accurate sales forecasts can help businesses increase revenue and profitability. By having a clear understanding of expected sales volume, businesses can plan for growth, invest in product development, and expand their customer base. 

With accurate forecasts, businesses can make informed decisions about pricing, promotions, and marketing campaigns, which can help to drive sales and boost revenue.

How to improve the accuracy of your sales forecasts: key components

Accurate quantitative sales forecasting involves using data and mathematical models to predict future sales numbers. 

The key components of this type of forecasting include historical data analysis, time-series analysis, use of quantitative forecasting methods, incorporation of external factors and market conditions, and involvement of the sales team and management.

Let’s look at these in a little more detail below.

Examine historical data

One of the most important components of accurate sales forecasting is the analysis of historical data. By examining past sales data and trends, companies can identify patterns and gain valuable insights that can inform their sales forecasting decisions.

For example, if you are a sales manager that wants to forecast your sales for the upcoming year you’ll begin by analysing historical sales data for the past few years and look at your sales data broken down by month, quarter, and year.

You might notice that your sales tend to spike in Q1 and Q4 but dip in Q2 and Q3. You also notice that there is a particular product line that tends to sell better in Q1 and Q4, while another product line sells better in Q2 and Q3. By taking note of this, you can adjust your sales forecast accordingly, anticipating the spikes and dips in sales for each product line and quarter.

This historical data analysis helps you to make a more accurate sales forecast and allocate your resources more effectively, ensuring that you are better equipped to meet demand during peak sales periods.

Engage in time-series analysis

Another key component of accurate sales forecasting is time-series analysis, which involves the study of data over a specific period of time. This analysis helps companies identify trends and patterns that may indicate changes in sales volume and other key metrics.

For instance, a company might track its sales data on a monthly basis and observe that its sales tend to increase during the holiday season. By identifying this pattern through time-series analysis, the company can use it to forecast sales for the upcoming holiday season and make necessary adjustments to its sales strategy, such as increasing inventory or launching a holiday promotion.

Use quantitative forecasting methods

Quantitative forecasting methods, such as time-series analysis, are critical for accurate sales forecasting. These methods involve the use of mathematical models to predict future sales based on historical data and other key factors.

An example of a quantitative forecasting method is regression analysis. Regression analysis involves analysing the relationship between one or more independent variables (such as price, advertising spend, or economic indicators) and sales to predict future sales based on these variables. For example, a company may use regression analysis to predict the impact of a price increase on sales volume.

Exponential smoothing is another quantitative forecasting method that can be used to forecast future sales. This method involves assigning a weight to each historical data point, with more recent data points given a higher weight than older data points. 

The weighted average of the historical data points is used to forecast future sales. This method can be useful for businesses that have volatile sales data, as it puts more weight on recent data points and is therefore more responsive to changes in sales patterns.

Incorporate external factors and market conditions

Accurate sales forecasting also requires the consideration of external factors that may impact sales, such as changes in the economy, market trends, and competitor activity.

For example, a company that produces ski equipment may adjust their sales forecasts based on factors such as snowfall levels, economic conditions, and trends in outdoor activities. 

If they see a strong correlation between snowfall levels and sales of their products, they can use historical snowfall data to predict the future sales of their products. They can also analyse economic conditions and trends in outdoor activities to determine the potential demand for their products.

Involve your sales team and management

Finally, accurate sales forecasting requires the involvement of the sales team and management. By collaborating with these key stakeholders, companies can ensure that their forecasts are based on informed decisions and accurate data.

One way of involving the sales team and management in the sales forecasting process is through the use of sales pipeline reviews. During a sales pipeline review, the sales team presents their current pipeline and discusses the likelihood of deals closing within a certain timeframe. The management team then provides feedback and insights based on their experience and knowledge of the market.

By incorporating these key components into your sales forecasting process, you can achieve greater accuracy and make more informed decisions about your sales strategy and resource allocation.

How Huble can help improve your sales forecasting


Accurate sales forecasting is a critical aspect of a company’s success. It can help improve decision-making, enhance sales team performance, allocate resources effectively, and ultimately increase revenue and profitability. 

By implementing the key components of accurate sales forecasting, companies can significantly improve their forecasting accuracy.

However, implementing accurate sales forecasting can be challenging for some companies, especially those lacking the necessary expertise and resources. That is why at Huble, we offer sales consultancy services to help companies improve their sales forecasting processes. 

Our team of experts can provide valuable insights and assistance to ensure that you have the most accurate sales forecasts possible.

At Huble, we’ve helped hundreds of companies optimise their sales forecasting processes. If you need help with your sales forecasting, speak with our team today.

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Book a demo with our team today.

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