3. Study Design
The dataset is composed of all exiting and non-exiting Estonian exporters (similarly to Hiller et al. [
42], all firms with positive export sales are considered exporters) during 2010–2022, with the following restrictions. All firms are subject to a minimum sales revenue level of EUR 40,000 per year, leading to the exclusion of very small microfirms. Before exiting, each firm had to be operational in foreign markets for at least three consecutive years, and the cessation of exporting had to last for at least two years, for the de-internationalization to be substantial enough. The latter condition is similar to Askenazy et al. [
51], Chen et al. [
50], Beņkovskis et al. [
59], Atabek Demirhan [
60], Harris and Li [
61], Ilmakunnas and Nurmi [
44], and Inui et al. [
21], but the former three studies focused on ceasing exports to a specific market. (However, for some authors, not exporting for one year was enough to classify a firm as an “exiter” [
62,
63]. On the other hand, Hiller et al. [
42] required three years without export activities.) At least three years of exporting is necessary to exclude intermittent exporters [
64,
65]. Two years might not be sufficient, as the export revenue per single order can be distributed between two financial years. Therefore, the last three years with export revenues before having only domestic sales originate from 2012–2020, leading to 1363 exit episodes, while the frequency of observations from each year remains in the interval of 100–200. Therefore, the episodes are quite evenly distributed over the lengthy time period. In the case of export exits, we focus on the last three years with export revenues.
As the comparative group on non-exiting firms, we consider all Estonian firms that during the period 2016–2022 were exporting during all years and match the sales revenue criteria, but in their case, we use the following three-year sequences: 2016–2018, 2017–2019, and 2018–2020. Therefore, in the case of each firm, besides the three-year period, two additional years are used to check that it is not subject to CE. Multiple three-year periods are used to avoid the single-period bias. This totals 11,290 non-exit episodes.
Based on the last sales revenue figure, the population of firms divides as 0.8% large, 4.6% medium, 17.0% small and 77.6% micro-sized entities according to the European Union’s classification rules. Based on the last year’s total assets criteria, the proportion of large firms is even smaller (0.6%), while a firm might be large-sized based on one criterion and medium-sized based on another criterion, and thus, they are not excluded from the analysis. The latter can also vary by the year analyzed. Therefore, the empirical analysis has a clear MSME-centric focus, and the results might therefore not necessarily be applicable in the large firms’ segment.
The dependent variable of this study is export exit (EXIT, see
Table 2). For both firm groups, independent variables are coded for the three-year sequences (from T-3 to T-1), while in the group of exiting firms, year T reflects the first year and T+1 the second year with no more export revenues, while in the other group, firms remain exporting in years T and T+1. Based on the theoretical concept (see
Table 1), variables portray firms’ internationalization (IP) and financial performance (FP) during the three years analyzed (see
Table 2), while similar variables have been applied in the extant research. For instance, several authors have used export scale (volume) [
50,
62], export intensity (share) [
28,
63,
66] and/or export scope (markets) [
66,
67] to measure export performance [
68]. As financial performance variables, classical financial ratios used in failure prediction models are applied, while the chosen four domains (liquidity, profitability, solvency, and revenue creation capability) are all represented among the ten best variables in Bellovary et al. [
47], often with the same formulas. In addition, similar ratios have been applied in earlier export exit research (e.g., [
51,
60,
61]).
All the variables are coded for three years (from T-3 to T-1), with a respective marking in tables. Besides the variables reflecting the situation for each of those three years, dynamic variables are also applied in this study. These are calculated as changes of independent variables documented in
Table 2 between years T-1 and T-3, with a formula value
T-1–value
T-3, based on Laitinen [
69]. The only technical exception is the dynamic export revenue variable, in the case of which original values are subtracted, then the natural logarithm is applied on the absolute value and then multiplied by “−1” in the case the original change was negative. Such a dynamic context is marked with DELTA.
The analysis is divided into three consecutive stages to answer three research questions. In Stage 1, four logistic regressions (for T-3, T-2, T-1, DELTA) are composed with all seven variables from the respective period. These enable the obtaining of the general behavior of the respective variables in the population. A similar dynamic approach was applied in a predictive study by Iwanicz-Drozdowska et al. [
52]. In the case of T-3, T-2 and T-1 models, a significant negative coefficient would indicate the existence of a performance gap between CE and non-CE firms, while the firms continuing to export perform better. The significant negative coefficient in the DELTA model would indicate the enlargement of the performance gap during the three years. Multicollinearity is not an issue in any of the models, as the average variance inflation factor (VIF) ranges from 1.50 to 1.67, while the maximum individual VIF in the models is 2.37. To avoid the bias from using a single method, the calculations in Stage 1 have been repeated with the probit regression.
In Stage 2, the population of CE and non-CE firms is divided into three sub-groups (types of exporters) in three different ways based on the firms’ export scale, intensity and scope. This is achieved for each of those three dimensions by dividing the population into three by quantiles based on the value of either export revenue, export share from sales or number of markets. The respective two breakeven points for these variables are EUR 61,295 and EUR 385,349 export revenue, 12.3% and 76.4% export share, 1 and 3 markets (leaving all the respective figures to the lower quantile). These groups are respectively called small/medium/high export scale/intensity/scope, and firm frequencies for them can be found in
Appendix A.
Then, analysis in each of those nine sub-groups is repeated for the four periods (T-3, T-2, T-1, DELTA), totaling 36 logistic regressions. Because in Stage 2, the most important aspect is the potential varying behavior of the respective variables, the results are presented not as full regressions, but instead, in the case of significant (also by distinguishing different levels of significance) variables, it is marked whether the coefficient is positive or negative. The latter provides evidence whether the higher values for the respective variables increase (positive coefficients) or decrease (negative coefficients) the likelihood of export exit in different firm sub-groups. To enhance the analysis concerning the behavior of seven performance measures and their match with the theoretical concept in
Table 1, an additional table summarizing the latter has been presented in
Section 4.
In the final stage, the potential of variables from three periods (T-3, T-2, and T-1) in predicting export exit is assessed. For that purpose, for the firm population and for the nine sub-groups separately, prediction models using the logistic regression are composed with the following timing logic reflecting the availability of the respective information. First, only the seven variables from T-3 are applied, then from T-3 and T-2, and finally, from all three periods. Therefore, these prediction models include 7, 14 and 21 variables, respectively. This enables us to outline how the prediction accuracy increases nearer to the year when a firm has fully ceased exporting. Each prediction model, unlike the earlier regressions outlining the significance of variables, is composed by weighting the populations of exiting and non-exiting firms equally in logistic regression. Such provision of equal weights to both groups is important, as otherwise, the prediction models are likely to prefer the majority group (non-exiting firms), leaving the characteristics of exiting firms largely irrelevant. As an example, without this weighting option, the prediction accuracy in the exiting firms’ group can be very low, and therefore, it is not technically correct to consider it as the prediction of ceasing exporting activities. The latter is a usual strategy implemented in earlier failure prediction research (e.g., exactly the same approach was administered in [
38]). For potential practical applicability purposes, logistic regression-based prediction models are also presented in the
Appendix F.
In order to find out the comparative performance of machine learning in prediction, for the population and nine sub-groups, models inclusive of 21 variables have also been composed with neural networks (NN). A two-layered NN with sigmoid function in both layers and automatic computation of units in both layers is applied, while each time, frequencies of (non-)exit firms have been equalized with the synthetic minority oversampling technique. The latter is a substitute for weighting in machine learning. A batch type of training is used, and the optimization algorithm is scaled conjugate gradient. Variables have been standardized before application in NN. A proportion of 70% of the firms are used for training the models, while the accuracies are reported from the test set composed of the remaining 30% of firms. For the population and each sub-group, three NN models are composed, as the results of NN can vary for each run. While the highest accuracy has been reported over these three runs, the additional analysis of variables’ importance in NN has been averaged over the three runs, as even for the same accuracy, different variables can have varying importance.
Despite being a single-country study, earlier research has indicated that the financial decline of (non-)failing exporters is relatively similar for firms from small open economies such as Estonia (see e.g., [
28]). For instance, the study by Lukason and Vissak [
28] concerning bankruptcies of exporters from different European countries indicates that the largest gap in revenue creation exists shortly before failure. Similarly, the study by Lukason and Laitinen [
70] indicates that the financial failure processes of firms can be very similar in certain countries, even when comparing countries of different sizes from different European regions. Therefore, it is assumed that the results obtained in this study could be applicable in certain other small export-oriented European economies.
5. Conclusions
This article contributed to the literature by validating the usefulness of internationalization and financial performance predictors for forecasting cessation of export activities based on a theoretical concept. The results on the Estonian firm population show that a performance gap exists among exiting and non-exiting firms with respect to export scale, intensity and scope during the three years before the exit, while that gap is widening closer to the exit. Exiting firms are more constrained by liquidity and solvency throughout that period, while their revenue creation capability and profitability become weaker with a certain time lag. Export exit is predictable with high accuracy, especially closer to the event.
The study leads to practical implications for various stakeholders. Export support agencies and creditors financing exporting firms can account for the fact that before ceasing exporting, international engagement is likely to reduce, i.e., withdrawal from foreign markets does not happen overnight. In addition, firms in lack of equity or liquid assets are more likely to withdraw. Therefore, when such signals are apparent, funding of such firms should be considered with higher caution. For instance, providing export support or loans to companies at risk of withdrawal from exporting will question the rationality of allocating such public funds to them. Ideally, the recipients of export-related public support should not only sustain their international engagement but also be able to increase it.
For private creditors, foreseeing export withdrawals has severalfold importance, as often these mean failed investments and the need to find additional markets for vacant production capacity, both of which can increase the risk of a company at least in the short-term. For practical purposes,
Appendix F includes the weighted logistic regressions, which can easily be applied to calculate the risk of withdrawal. Still, knowing the useful predictors in a longer horizon and the potential benefits of machine learning methods based on the results of this study, these stakeholders have certain guidelines to build in-house predictive tools as well.
There are also important takeaways for the managers of exporting firms. Namely, as activities at foreign markets are usually concerned with additional investments and costs, the decision to engage in exporting should be accompanied by careful financial planning. This especially concerns the availability of slack financial resources, because the paper demonstrated the foreign retreat to be associated with more limited liquidity and solvency of a firm. Therefore, firms should potentially hold reasonable financial buffers or at least have easy access to additional financial resources when aiming to remain in foreign markets. As the average export cessation process concerns a gradual retreat from a single foreign market, such companies seem to be too concentrated on specific choices, and potentially, instead of monitoring that foreign environment, are stuck in letting things happen rather than managing them. Because of that, for instance, the loss of one or a few clients might come as a surprise without providing short-term alternatives in a certain market. The potential solution would be a gradual diversification of the foreign market portfolio, while obviously, the costs and benefits of that action should be separately assessed.
The paper’s main limitation to be addressed in future studies is that the developed theoretical concept can be extended by means of performance measures and timespan. While the applied framework is likely to be valid for MSMEs in other similar countries, which requires further testing, and based on the concept developed in Tangpong et al. [
43], it is assumed that for large and listed firms, a lengthier time frame would be beneficial. In addition, a longer time frame could also be applied for this study, as it would especially enable us to understand how the predictors behave in the case of temporary de-internationalization, permanent de-internationalization and ceasing operations fully. In terms of performance measures, it would be interesting to understand how international withdrawal appears marketwise. While an average analyzed full de-internationalizer had a single foreign market, scholars could study whether retreats differ in respect to how far the market is, or even, if such information is accessible, whether differences exist for varying market-product combinations. With respect to financial performance, as the applied measures serve as usual inputs to probabilistic failure prediction models, a possibility for the paper’s development is to look at the failure probability dynamics also after the cessation of export activities. The latter would be especially topical for firms with high export intensity, as these are the likely candidates of going fully out of business, if timely reorganization is not implemented. While this study is unambiguously focused on predictive context, no conclusions can be drawn regarding what exactly causes the cessation of exporting. Therefore, future studies could be directed to finding out whether these predictors, and if so, in which exact sequence, also serve as causes of retreat from foreign markets. Finally, as Estonia is a small export-oriented open economy, studies could be conducted in countries with huge domestic markets, where returning home from abroad would probably be a much swifter option.