4.2. Statistical Analysis
As shown in
Table 1, the majority of participants (37.8%) rated their knowledge of financial concepts as average (3 on a scale of 1 to 5), indicating a reasonable understanding of topics such as saving and investing. Around 34.9% considered their knowledge to be high (4), and 13.6% rated it as low (2), demonstrating the need to reinforce financial education. The mean score was
= 3.35 and the standard deviation σ = 0.955, indicating that participants generally have a moderate to high level of knowledge of financial concepts. The relatively low standard deviation suggests concentration around the mean, with only slight variation in perceptions of the topic.
Regarding knowledge of tax concepts, most participants (39.2%) rated their knowledge as average (3). Around 27.1% considered their knowledge high (4), suggesting better preparation in this area. However, 21.1% classified their knowledge as low (2), highlighting the need to reinforce tax literacy among the population. Only 4.1% indicated no knowledge of the topic (1), which is positive but still reveals gaps that should be addressed in the future. The mean score was = 3.15 and the standard deviation σ = 0.983, suggesting that participants generally have a moderate level of knowledge of tax concepts. The standard deviation indicates considerable variation in responses, reflecting different levels of understanding among participants.
Concerning the main sources of knowledge, most participants reported having acquired most of their financial knowledge through self-learning (53.3%), showing a strong individual initiative in seeking information on these topics. Around 35.2% of respondents stated that they learned about finance and taxation in their job or workplace. Formal education also played a relevant role, with 34.3% indicating that they gained knowledge at school or university. Contact with family or friends was mentioned as a learning source by 31.6% of respondents, highlighting the importance of family interactions in financial education.
The media were cited by 29.5% of respondents, showing that communication channels play an important role in disseminating information. In contrast, public campaigns had very little influence, being mentioned by only 1.6% of participants, which underlines the need to rethink strategies to increase the reach and effectiveness of such measures.
Following the analysis of knowledge levels, questions were included focusing on participants’ experiences with this topic. Based on the responses to the question about participation in tax/financial education programmes promoted by government authorities, the overwhelming majority (95.9%) had never taken part in such programmes, while only 4.1% reported having participated at some point. Among those who did, 20.4% considered the experience very unsatisfactory, 9.3% rated it unsatisfactory, 25.9% satisfactory and 14.8% very satisfactory, suggesting a range of perceptions regarding the quality and impact of these programmes.
Regarding the adequacy of information provided by government measures, most participants considered it insufficient. Around 80.9% rated it as very insufficient or insufficient, indicating that the strategies currently adopted are not considered adequate by the resident population. Only a small minority of 2.3% considered the information sufficient and 1% very sufficient.
On the question assessing knowledge of taxes and tax deductions (
Table 2), most participants (37.4%) rated their knowledge as average. Around 25.1% considered their knowledge high, while 24.4% rated it low. Only 7.9% rated their knowledge very high, and 5.2% stated they had no knowledge. The mean score was
= 3.06 and the standard deviation σ = 1.009, reflecting a relatively wide distribution of responses.
The question on who usually fills in the income tax return was included to identify participants’ reliance on external help or their autonomy in the tax filing process. The majority of respondents (53%) complete their IRS return independently. Around 27.6% prefer to use an accountant or tax professional. A further 14.4% rely on family/friends to complete it, while only 0.4% use the tax authority’s support service.
After analysing participants’ level of knowledge and experience with tax and financial education, it becomes relevant to understand their perception of public policies in this field, to assess respondents’ awareness of government initiatives and their opinion on their adequacy and effectiveness in promoting financial literacy in Portugal. In addition, the study seeks to identify which government measures are considered most effective, as well as the most appropriate communication channels for disseminating such measures.
The results show that most participants are not aware of these initiatives, as only 28.2% reported knowing about existing measures. This high percentage of unawareness shows that government initiatives are not being adequately publicised among the population.
The results obtained through the questionnaire show a largely negative perception of the sufficiency and effectiveness of government policies promoting financial and tax literacy, as shown in
Table 3. Regarding the adequacy of current policies, most participants rated them as very insufficient (31.0%) or insufficient (39.7%), totalling 70.7% of responses with negative perceptions. Only 8.7% considered the policies sufficient. The mean score was
= 2.02 and the standard deviation σ = 0.846, indicating a distribution concentrated in the lower ratings.
Similarly, regarding the effectiveness of government policies in promoting financial and tax literacy, the trend remained negative, as most rated the policies as very ineffective (32.7%) or ineffective (38.0%), representing a total of 70.7% unfavourable assessments.
To understand which measures are considered most effective in promoting financial literacy in Portugal, participants were asked about their preferences. The results show that the most valued measure is the inclusion of financial education in schools, chosen by 88% of respondents. In addition, training programmes for adults were indicated by 52.1%, highlighting the need for initiatives targeting different age groups. Free access to financial counselling was mentioned by 44.1%, while public awareness campaigns and tax incentives had lower support, with 38% and 34%, respectively.
Continuing the analysis, the most suitable channels for disseminating these policies were also assessed. The results show that schools and universities (75.6%) are considered the most effective channels for spreading information on financial literacy, followed by television/media (57.1%) and social media (56.2%). Government websites (31.7%) and local public services (30.9%) received less emphasis, while digital influencers (22.9%) and newsletters (20.8%) were the least selected options.
Financial preparedness for retirement and perceptions of the sustainability of the public pension system are topics of great relevance, especially in light of current and future demographic and economic challenges. It is therefore necessary to assess confidence in the system and the adequacy of the strategies adopted to ensure financial stability after active working life.
Responses to the question on contributions to a public pension scheme show that a vast majority of respondents (84.4%) are currently contributing to a public system, whether Social Security, Caixa Geral de Aposentações or another, while only 15.6% said they are not contributing, mainly students who have not yet entered the labour market.
Regarding participants’ level of knowledge of the Social Security system, most rated their knowledge as average (43.2%), while 26.9% indicated low knowledge (
Table 4). Only 5.1% considered themselves very well informed. Regarding financial preparation for retirement, the data indicate a perception of insecurity, as most participants rated themselves as little or not at all prepared (46.6%), while only 4.3% reported feeling very prepared. Dissatisfaction is even more evident in the question on the adequacy of pension system benefits. Most participants considered current benefits very insufficient (34.2%) or insufficient (37.4%), totalling 71.6% negative responses. Only 5.9% gave sufficient or very sufficient ratings, showing that the perception of inadequacy is widely shared.
Finally, on the sustainability of the public pension system, the results were likewise negative. Most participants considered the system unsustainable, totalling 72% negative perceptions, reinforcing the widespread view that the pension system faces significant structural challenges.
Still regarding retirement planning, most participants stated that they have never tried to find out how much they need to save for retirement (53%), while 39.9% said they have an approximate idea and only 7.1% know the exact amount, showing a gap in financial planning for retirement.
Most participants (36%) also believe that their financial situation in retirement will be better than it is now, while 23.2% expect it to remain the same. However, 25.6% believe their financial situation will be worse, and 7.2% believe it will be much worse. Only 7.9% expect significantly better conditions. These results reveal a mix of optimism and concern, reflecting uncertainty about financial stability in retirement and the capacity to maintain their current standard of living.
As for the main financial preparation strategies for retirement, most participants (59.8%) said they contribute to the public Social Security system or another scheme. Other popular approaches include making investments (47.7%), saving through term deposits or Savings Certificates (45.6%), and subscribing to Retirement Savings Plans (39.7%). However, 13.3% of respondents reported having no plan for retirement, which may indicate a lack of knowledge or adequate financial planning.
Regarding confidence in making financial decisions, the data show that most participants (64.3%) feel confident in making decisions, while 35.7% said they do not. The results suggest that while most respondents feel secure in their financial choices, a significant portion still faces difficulties or uncertainty in this area.
The results on current financial well-being reveal a moderate perception, with a mean of 3.19 and a standard deviation of 0.914 (
Table 5). Most participants rated their financial well-being as 3 (42.4%), while only 5.7% gave the highest score (5), suggesting that although there is balance, there is still room for improvement in the population’s financial well-being.
Regarding the habit of saving part of the monthly income, a positive trend emerges, with a mean of 3.84, indicating that saving is a relatively established practice. Almost 39% of respondents reported saving frequently, while only 4.4% reported saving rarely or never. However, the habit of investing part of the monthly income shows greater dispersion, with a mean of 2.85 and a standard deviation of 1.414. The distribution of responses shows that 23.4% do not have the habit of investing, while only 18.1% report investing very frequently, reflecting the extremes between those who adopt investing as a financial strategy and those who do not.
Respondents show a strong preference for low-risk investments, with term deposits being the most chosen option (53%), followed by Savings/Treasury Certificates (37.6%) and Retirement Savings Plans (36.3%), reflecting a strategy focused on security and the long term. ETFs (33.9%) also have significant uptake, suggesting some diversification. In contrast, only 22.8% invest in individual stocks and 14% in cryptocurrencies, indicating a lower risk tolerance. Investment funds (16.3%) and real estate (18.5%) show moderate participation, while commodities (4.1%) are the least explored category. These results suggest a predominantly conservative investor profile, prioritising financial stability over more volatile assets.
The main obstacles to saving and investing identified are a lack of disposable income (57.4%) and fear of financial risks or losses (47.5%), suggesting difficulties in allocating part of their budget for investment and concern over potential losses of their savings. Economic uncertainty (42.8%) also emerges as a relevant factor, reflecting concerns such as inflation and a possible economic recession.
As can also be seen in
Table 5, the influence of government policies and financial literacy programmes on investment decisions was considered very low, with an average of only 1.81. Most participants (53.8%) indicated that these initiatives did not have a significant impact on their investment decisions. Reviewing and adjusting the personal budget appears to be a regularly adopted practice, with an average of 2.90. About 39.4% of participants reported occasionally reviewing their finances, while only 7.2% reported reviewing them frequently.
Finally, the impact of financial education on financial decisions was relatively positive, with an average of 3.34. Approximately 48.7% of participants gave high ratings, indicating that the financial education they received had a significant impact on nearly half of the respondents.
Let us now examine how certain factors, such as the level of financial and tax literacy, saving frequency, monthly income, gender, and age, among others, are interconnected and mutually influence one another. This approach will allow the identification of behavioural patterns and statistically significant differences between groups, aiming to deepen the understanding of the impact of financial literacy on the daily economic habits and decisions of the Portuguese population.
In the relationship between the habit of saving and the propensity to invest, it is observed that individuals who save infrequently also tend to invest with low or no regularity. As saving frequency increases, there is a significant growth in investment activity, indicating a direct relationship between these two financial behaviours. It can be concluded that the habit of regular saving tends to serve as a driver for investment, enhancing the profitability of savings.
When analysing investment frequency between males and females, significant differences in investment practices are observed. The median investment frequency for males is 3, reflecting a higher propensity to invest, in contrast with females, whose median is 2 on the scale. Moreover, males show greater variability in investment practices, whereas females exhibit more homogeneous and possibly more conservative behaviours. These findings suggest that men are more likely to invest frequently, while women tend to focus more on saving, which can guide tailored communication measures and strategies for different profiles.
The
t-test analysis for equality of means between genders reveals statistically significant differences in some variables (
Table 6). Males also demonstrated a higher level of knowledge in both tax concepts (
= 3.26) and financial concepts (
= 3.56) compared to females (
= 3.03 and 3.14, respectively), indicating that gender can be a differentiating factor in understanding essential topics in financial and tax literacy.
Another relevant finding concerns investment frequency, which also showed statistically significant differences, with males recording a higher mean ( = 3.15) compared to females ( = 2.54), possibly reflecting a greater male predisposition to take risks or seek opportunities to maximise their capital. Regarding the current level of financial well-being, men also reported a significantly higher mean ( = 3.36) compared to women ( = 3.01).
In the study of the relationship between financial literacy and respondents’ educational level, it is generally observed that financial literacy tends to increase with higher levels of education. Most individuals with higher education demonstrate moderate to high knowledge, with a significant number reporting the highest levels on the scale. In contrast, those with only a 9th-grade education show lower knowledge, mostly concentrated at levels 2 and 3 on the scale.
Additionally, the data collected for the Master’s/Graduate/MBA and Bachelor’s groups show a similar trend, with a predominance of the highest levels of financial knowledge. On the other hand, respondents with secondary education exhibit more variation in knowledge levels, but still lower than those with higher education, suggesting that educational attainment is positively associated with a perception of greater understanding of financial concepts. This demonstrates that formal education plays a crucial role in developing financial literacy.
The relationship between monthly net income and saving frequency reveals a clear trend: as net income increases, so does the frequency with which individuals save (
Table 7). Respondents with lower incomes are mostly concentrated at the lower levels of the saving frequency scale (1 to 3), whereas those with higher incomes show a distribution skewed toward the upper levels of the saving scale, suggesting that greater financial availability facilitates a more consistent saving habit. Furthermore, the data indicate that income brackets above €2000 per month exhibit a strongly established saving practice, with more than half of respondents reporting the highest frequency levels on the scale. This finding aligns with economic theory principles and highlights the need for greater efforts to encourage saving, particularly among lower-income groups.
The analysis of the relationship between respondents’ age and their level of financial literacy reveals a highly heterogeneous distribution. Knowledge levels, measured on a scale from 1 to 5, are represented across all age groups without a consistent trend. This suggests that both younger and older individuals can exhibit varying levels of literacy, indicating that age alone does not significantly influence the population’s financial knowledge.
The results of the
t-test for equality of means between age groups above and below the average age (39 years) identify statistically significant differences in several variables (
Table 8). Saving frequency shows a significant difference, being higher among younger individuals (
= 4.06) compared to older ones (
= 3.59), suggesting a greater propensity among younger people to adopt regular saving practices.
Additionally, older respondents demonstrate greater knowledge of taxes and tax deductions, as well as general fiscal concepts, reflecting accumulated life experience in fiscal matters. Another variable with a statistically significant difference is the perception of the sufficiency of information provided by the State (p = 0.001), with a higher average among individuals aged 39 or older (1.88 vs. 1.67). On the other hand, variables such as current financial well-being, investment frequency, and perception of the impact of financial education did not show statistically significant differences between the groups.
Regarding investment instrument preferences by gender, it is also possible to identify relevant differences in risk profiles and strategies adopted by each gender. Overall, females demonstrate a stronger inclination toward more conservative financial products, such as Time Deposits (28.94%), Retirement Savings Plans—PPR (18.56%), or Savings/Treasury Certificates (17.76%).
On the other hand, males show a greater predisposition for diversification into investment products associated with higher risk levels. This preference is observed in the choice of ETFs, representing 17.30% of male responses versus only 9.78% of female responses. The same applies to Individual Stocks (11.80%), Cryptocurrencies (7.47%), and Commodities (2.49%), indicating that men, in general, are more inclined toward investment strategies with higher risk and volatility, but also with the potential for greater financial returns.
Thus, it can be concluded that gender plays a significant role in financial product choices, making it relevant to consider these differences when designing financial education and literacy strategies to better align with the needs and risk profiles of each group.
In summary, it was observed that factors such as saving frequency, financial literacy level, net monthly income, and educational attainment maintain statistically significant relationships among themselves, demonstrating that financial decisions do not occur in isolation but rather reflect a set of interdependent factors.
From the results, it is possible to highlight, for example, that individuals with a stronger saving habit also tend to have a greater propensity to invest, and that financial literacy levels are positively associated with available income and educational attainment. On the other hand, relevant differences were observed between genders regarding the choice of financial instruments, and between age groups regarding the degree of retirement preparedness, reinforcing the need for financial literacy measures that are segmented and tailored to the different social realities and individual profiles.