Project – Inflationary Pressure and Household Consumption Patterns in Nigeria: A Study of Selected Households in Ikeja Local Government Area, Lagos State

CHAPTER ONE

INTRODUCTION

1.1 Background of the Study

Inflation is one of the most important macroeconomic phenomena affecting the welfare and economic decisions of households. It refers to a sustained increase in the general price level of goods and services over time, resulting in a reduction in the purchasing power of money. When prices rise faster than household income, families are forced to reconsider how available income is allocated among food, housing, transportation, education, healthcare, clothing, communication and other necessities. Consequently, inflation is not only a macroeconomic problem but also a household-level issue because its effects are experienced directly through changes in the prices of goods and services consumed daily. The National Bureau of Statistics (NBS) explains that the Consumer Price Index (CPI) measures changes in the general price level of goods and services consumed by households and that the year-on-year change in the CPI is used to measure headline inflation.

Household consumption represents an important component of economic activity. At the microeconomic level, consumption involves the purchase and utilisation of goods and services by households to satisfy their needs and wants. Household consumption patterns describe the way families distribute their available income among different categories of expenditure. These patterns are influenced by income, household size, prices, preferences, expectations, access to credit, employment conditions and prevailing economic circumstances. Classical consumption theories, particularly Keynes’ (1936) General Theory, suggest that consumption is strongly related to disposable income, while subsequent theories have emphasised expectations, permanent income and life-cycle considerations in explaining household consumption behaviour.

Inflation complicates household consumption decisions because rising prices reduce the real purchasing power of income. Where nominal income does not increase at the same rate as prices, households may be unable to purchase the same quantity and quality of goods and services they previously consumed. Households may therefore adjust their consumption by reducing quantities purchased, switching to cheaper substitutes, postponing non-essential expenditure, changing brands, reducing savings or allocating a greater proportion of income to essential goods. These adjustments are particularly important in developing economies where a substantial proportion of household income may be spent on food and other basic necessities.

The relationship between inflation and household consumption is not necessarily uniform across households. The effect of rising prices depends partly on income level, household size, employment status, location and the composition of household expenditure. Low-income households are generally more vulnerable because they have limited financial buffers and spend a relatively large proportion of their income on necessities. Middle- and high-income households may have greater capacity to absorb temporary price increases or substitute among goods and services. Thus, an increase in the general price level can produce different consumption responses across households.

Nigeria provides an important environment for studying this relationship. The Nigerian economy has experienced persistent inflationary pressures arising from several factors, including exchange-rate movements, food supply constraints, transportation costs, energy costs, monetary conditions, insecurity and changes in government policies. The Central Bank of Nigeria (CBN, 2024) reported that inflationary pressures intensified in 2024, with rising food prices, exchange-rate reforms and the lingering effects of fuel-subsidy removal contributing to the increase in consumer prices. In February 2024, for example, headline inflation reached 31.70 percent year-on-year, while food inflation reached 37.92 percent.

The severity of inflationary pressure became even more apparent later in 2024. According to the National Bureau of Statistics, Nigeria’s headline inflation rate increased from 28.92 percent in December 2023 to 34.80 percent in December 2024. Such an increase represents a substantial deterioration in the purchasing power of households and creates significant pressure on families to modify their spending decisions. The World Bank similarly observed that the combination of economic reforms, higher fuel prices and exchange-rate adjustments increased the cost-of-living pressures experienced by Nigerian households, with inflation reaching 33.7 percent in April 2024.

The impact of inflation is particularly significant when it affects food prices. Food is a basic necessity, and households cannot completely eliminate food expenditure when prices increase. Instead, they may reduce the quantity or quality of food purchased, substitute relatively expensive foods with cheaper alternatives, reduce the number of meals, purchase smaller quantities more frequently or shift towards less expensive sources of nutrition. The CBN (2024) identified food prices as a major contributor to inflationary pressure in Nigeria and linked increasing food prices to transportation and logistics costs, security challenges and difficulties in food production and distribution.

Inflation can also affect expenditure on non-food necessities. Rising transportation costs may force households to reduce trips, change commuting arrangements or use cheaper transportation alternatives. Increasing housing costs can lead households to relocate, share accommodation or reduce expenditure on other goods. Rising educational and healthcare costs may cause households to postpone expenditure or seek cheaper alternatives. Similarly, increases in energy prices can alter expenditure on electricity, cooking fuel and transportation. These changes collectively constitute shifts in household consumption patterns.

The situation is especially important in urban centres such as Lagos State. Lagos is Nigeria’s major commercial and economic centre, with a large population and a high concentration of formal and informal economic activities. Households in Lagos face substantial expenditure commitments relating to accommodation, transportation, food, education, healthcare, energy and communication. The cost of living in an urban environment means that changes in the prices of essential commodities can rapidly affect household budgets. Consequently, studying household responses to inflation in Lagos can provide useful evidence concerning how urban Nigerian households adjust their consumption behaviour during periods of economic pressure.

Ikeja Local Government Area provides an appropriate setting for this investigation. Ikeja is a major urban and administrative centre within Lagos State, characterised by residential communities, commercial activities, formal employment, small businesses and diverse household income groups. The population contains households with different socioeconomic characteristics and varying abilities to respond to inflation. Some households may respond to rising prices by reducing discretionary spending, while others may rely on savings, credit, additional income-generating activities or changes in consumption choices. Examining households within Ikeja can therefore provide a micro-level understanding of how inflationary pressure translates into actual changes in consumption behaviour.

The relevance of household-level analysis is supported by recent Nigerian research. Olalere and Aladetanye (2025), using Nigerian data covering 1981–2023, found that inflation significantly influenced household consumption expenditure alongside population size, population growth and aggregate savings. Their findings suggest that inflation is an important determinant of household consumption expenditure in Nigeria. Similarly, Ewubare and Onah (2022) investigated household expenditure in Nigeria and specifically examined the roles of income and inflation using an autoregressive distributed lag framework.

Osuji (2020) also examined the effect of inflation on household final consumption expenditure in Nigeria over the period 1981–2018. The study reported a significant long-run relationship between inflation and household consumption expenditure and recommended policies aimed at maintaining price stability. These findings demonstrate that inflation and household consumption are closely connected at the national level. However, national-level studies may conceal important differences in how households within particular localities respond to price changes.

Household consumption responses may also involve substitution and coping strategies rather than simply a reduction in total expenditure. Animashaun and Wossink (2024), examining household responses to aggregate shocks in Nigeria, found that household expenditure responses differed across households and that consumption substitution, household-size adjustments and labour-supply responses were among the ways households coped with economic shocks. This suggests that households do not respond to economic shocks in a uniform manner; rather, they employ different strategies depending on their resources and circumstances.

The distinction between nominal and real consumption is also important. During periods of inflation, nominal household expenditure may increase because households pay higher prices for goods and services even when the quantity consumed remains unchanged or declines. Therefore, an increase in household spending does not necessarily imply improved household welfare or greater consumption in real terms. A household may spend more money on food while actually purchasing less food. This makes it important to investigate not merely how much households spend but also how inflation changes what they consume, the quantities they purchase and the priorities they assign to different expenditure categories.

The measurement of inflation itself has also evolved in Nigeria. The NBS recently rebased the Consumer Price Index to reflect more current household consumption patterns. The revised CPI uses a 2023 weight reference period and 2024 price reference period and covers 934 product varieties across 13 divisions under the Classification of Individual Consumption According to Purpose (COICOP) 2018 framework. This development is important because consumption patterns change over time, and the composition of household expenditure must be periodically updated for the CPI to remain representative.

The recent CPI rebasing further demonstrates the dynamic relationship between inflation measurement and household consumption. The NBS explains that changes in household consumption patterns necessitate updating the CPI basket and expenditure weights. This reinforces the importance of studying actual household behaviour rather than relying exclusively on aggregate inflation statistics.

The theoretical foundation of the relationship between inflation and consumption can also be explained through the Keynesian consumption function. Keynes (1936) proposed that current consumption is primarily influenced by current disposable income. When inflation increases while nominal income remains relatively unchanged, real disposable income declines, reducing households’ ability to purchase goods and services. However, later consumption theories provide additional explanations. Friedman (1957), through the permanent income hypothesis, argued that consumption depends more strongly on expected long-term income than on temporary income changes. Modigliani and Brumberg (1954), through the life-cycle hypothesis, similarly emphasised the role of expected lifetime resources and household wealth in determining consumption.

These theories suggest that households’ responses to inflation may depend not only on current income but also on expectations about future income and prices. If households expect prices to increase further, they may accelerate purchases of durable or essential goods to avoid higher future prices. Conversely, households experiencing uncertainty about employment or future income may become more conservative and reduce discretionary consumption. Thus, inflation can influence both the level and composition of household expenditure.

Inflation may also affect household saving behaviour. When the purchasing power of money declines, households may find it difficult to maintain previous levels of saving. Some households may reduce savings to maintain basic consumption, while others may increase precautionary savings if they are concerned about future economic uncertainty. The resulting balance between consumption and saving can have implications for household welfare and broader economic activity.

The consequences of persistent inflation are therefore multidimensional. At the household level, prolonged price increases can reduce real income, alter consumption choices, increase financial stress and weaken the capacity to save. At the macroeconomic level, changes in household consumption influence aggregate demand, economic growth and business activity. Understanding the household response to inflation is therefore important for policymakers seeking to design appropriate monetary, fiscal and social-protection interventions.

Despite the importance of this subject, much of the Nigerian literature has examined inflation and household consumption using aggregate national time-series data. While such studies are valuable for understanding macroeconomic relationships, they provide limited information about how individual households respond to inflationary pressure in specific urban communities. A household-level study in Ikeja Local Government Area can therefore provide additional evidence concerning changes in food expenditure, transportation, housing, healthcare, education, clothing, recreation, savings and other components of household consumption.

The present study is therefore designed to examine Inflationary Pressure and Household Consumption Patterns in Nigeria: A Study of Selected Households in Ikeja Local Government Area, Lagos State. The study will investigate how inflationary pressure affects the consumption decisions of selected households and identify the adjustments households make in response to rising prices. The findings are expected to provide useful evidence for understanding the practical consequences of inflation at the household level.

1.2 Statement of the Problem

Inflation has become a major economic challenge for Nigerian households because persistent increases in the prices of goods and services have reduced the purchasing power of household income. The increase in Nigeria’s headline inflation from 28.92 percent in December 2023 to 34.80 percent in December 2024 demonstrates the intensity of price pressures experienced during this period. Although inflation is measured at the national level, its consequences are experienced directly by individual households through the prices they pay for food, transportation, housing, energy, healthcare, education and other necessities.

The central problem is that household income does not necessarily increase at the same rate as prices. When the prices of basic goods rise faster than household income, families must make difficult choices regarding how limited resources are allocated. Households may reduce the quantity of goods purchased, switch to cheaper alternatives, postpone non-essential expenditure, reduce savings or seek additional sources of income. Such changes can adversely affect household welfare, particularly where expenditure is concentrated on necessities.

Food consumption presents a particularly serious concern. Households cannot completely eliminate food expenditure even when food prices rise. Consequently, persistent food inflation may force families to reduce food quality and quantity or substitute more expensive food items with cheaper alternatives. The CBN identified rising food prices as a major driver of Nigeria’s inflationary pressure and linked food-price increases to transportation and logistics costs, security challenges and difficulties in food production and distribution.

The problem extends beyond food. Rising transportation costs can increase the cost of commuting to work, school and markets. Increasing housing costs can consume a greater proportion of household income, leaving less money for other necessities. Higher healthcare and educational expenses can force households to postpone treatment or educational expenditure, seek cheaper alternatives or rely on informal support. Rising energy costs can also increase expenditure on electricity, cooking fuel and transportation. Therefore, inflation may alter the entire structure of household consumption rather than simply increasing total expenditure.

Another problem is that households are not equally affected by inflation. Differences in income, household size, employment status, savings, access to credit and consumption preferences can determine the ability of households to absorb rising prices. A high-income household may continue purchasing preferred products despite price increases, whereas a low-income household may have to substitute lower-priced products or reduce consumption. Consequently, aggregate inflation statistics cannot adequately explain the different experiences of households within a particular community.

This issue is particularly relevant in Ikeja Local Government Area, Lagos State. As an important urban and commercial centre, Ikeja contains households with diverse economic circumstances and expenditure commitments. Households are exposed to changes in food prices, transportation costs, housing expenses, education, healthcare, energy and other services. Yet there is limited household-level evidence specifically showing how selected households in Ikeja have adjusted their consumption patterns in response to inflationary pressure.

The existing empirical literature also reveals a gap that warrants further investigation. Osuji (2020) established a significant long-run relationship between inflation and household final consumption expenditure in Nigeria, while Ewubare and Onah (2022) investigated income and inflation as determinants of household expenditure. Olalere and Aladetanye (2025) further found that inflation significantly influences household consumption expenditure in Nigeria. However, these studies largely rely on national or aggregate data and therefore provide limited insight into the specific consumption adjustments made by households in a particular urban local government area.

There is also a methodological concern in interpreting aggregate household consumption expenditure during periods of high inflation. An increase in nominal expenditure may simply reflect higher prices rather than an increase in the quantity or quality of goods consumed. For example, a household may spend more on food but purchase fewer food items. Therefore, measuring the effect of inflation requires attention to changes in consumption priorities, quantities, substitution patterns and household budgeting decisions rather than relying solely on total monetary expenditure.

Furthermore, the recent rebasing of Nigeria’s CPI demonstrates that household consumption patterns themselves change over time. The NBS explains that the updated CPI incorporates new household expenditure weights based on more recent consumption information, including the 2023 Nigeria Living Standards Survey. This reinforces the need for current empirical studies that examine actual household consumption behaviour under prevailing economic conditions.

The problem addressed by this study, therefore, is the insufficient understanding of how inflationary pressure affects the actual consumption patterns of households in Ikeja Local Government Area, Lagos State. Although national studies have established relationships between inflation and household consumption, there remains a need to examine how households at the local level adjust their expenditure on essential and non-essential goods and services when confronted with rising prices.

It is against this background that the study investigates Inflationary Pressure and Household Consumption Patterns in Nigeria: A Study of Selected Households in Ikeja Local Government Area, Lagos State. The study seeks to determine whether inflationary pressure significantly affects household consumption patterns and to provide evidence on the practical strategies households employ to cope with rising prices.

1.3 Purpose of the Study

The main purpose of this study is to examine the effect of inflationary pressure on household consumption patterns in Ikeja Local Government Area, Lagos State.

Specifically, the study seeks to:

1. examine the extent of inflationary pressure experienced by selected households in Ikeja Local Government Area;
2. determine the effect of inflationary pressure on household food consumption patterns;
3. examine the effect of inflationary pressure on household expenditure on non-food necessities;
4. determine the effect of inflationary pressure on household savings and discretionary consumption

1.4 Research Questions

The following research questions will guide the study:

1. What is the extent of inflationary pressure experienced by selected households in Ikeja Local Government Area?
2. What effect does inflationary pressure have on household food consumption patterns?
3. What effect does inflationary pressure have on household expenditure on non-food necessities?
4. What effect does inflationary pressure have on household savings and discretionary consumption?

1.5 Research Hypothesis

The following null hypothesis will be tested at the 0.05 level of significance:

H₀: Inflationary pressure has no significant effect on household consumption patterns in Ikeja Local Government Area, Lagos State.

1.6 Significance of the Study

This study will be significant to households because it will provide a clearer understanding of how inflation influences household budgeting, purchasing decisions, food choices, savings and expenditure priorities. The findings may help households understand the importance of financial planning and appropriate consumption adjustments during periods of rising prices.

The study will also be useful to government and policymakers. Evidence on household responses to inflation can assist policymakers in designing interventions aimed at protecting household purchasing power, particularly among vulnerable households. The findings may contribute to discussions concerning price stability, social protection, food security and household welfare.

The study will be relevant to the Central Bank of Nigeria and other economic policy institutions because household responses provide an important dimension for understanding the real-world consequences of inflation. Monetary and fiscal policies designed to control inflation can benefit from evidence concerning how price changes affect household consumption decisions.

The study will also be useful to businesses and marketers. Understanding changes in household consumption patterns can help businesses anticipate changes in consumer demand, pricing sensitivity, brand preferences and product substitution. Producers and retailers may use such information when developing pricing and marketing strategies during periods of economic uncertainty.

Finally, the study will contribute to academic literature on inflation and household consumption in Nigeria. While existing studies have provided useful national-level evidence, this study will provide a localised household-level perspective based on selected households in Ikeja Local Government Area. It may also serve as a reference for future researchers interested in inflation, consumer behaviour, household welfare and economic adjustment.

1.7 Scope of the Study

The study focuses on Inflationary Pressure and Household Consumption Patterns in Nigeria, with particular reference to selected households in Ikeja Local Government Area, Lagos State.

The study is conceptually concerned with two major variables: inflationary pressure as the independent variable and household consumption patterns as the dependent variable. Inflationary pressure will be considered in terms of perceived and experienced increases in the prices of goods and services, particularly food, transportation, housing, energy and other essential items.

Household consumption patterns will be examined in terms of changes in expenditure on food, housing, transportation, education, healthcare, clothing, energy, recreation, savings and other household needs. Particular attention will be paid to changes in consumption quantity, product substitution, expenditure priorities and discretionary spending.

Geographically, the study is limited to Ikeja Local Government Area of Lagos State. The study will involve selected households within the Local Government Area and will obtain primary information from household respondents through a structured questionnaire.

1.8 Operational Definition of Terms

Inflation: A sustained increase in the general price level of goods and services over time, resulting in a decline in the purchasing power of money.

Inflationary Pressure: The economic conditions and forces that cause or contribute to persistent increases in the prices of goods and services, thereby placing pressure on household purchasing power.

Household: A person or group of persons who live together and make arrangements for common living and consumption needs.

Household Consumption: The expenditure and use of goods and services by households to satisfy their needs and wants.

Consumption Pattern: The manner in which households allocate their available income among different categories of goods and services.

Household Consumption Expenditure: The amount of money spent by a household on goods and services during a specified period.

Purchasing Power: The quantity of goods and services that a unit of income or money can purchase at prevailing prices.

Food Consumption: Household expenditure and utilisation of food products and beverages required for household sustenance.

Non-Food Consumption: Household expenditure on goods and services other than food, including housing, transportation, education, healthcare, clothing, communication and recreation.

Consumer Price Index (CPI): A statistical measure used to track changes in the prices of a representative basket of goods and services consumed by households.

Substitution: The process whereby households replace relatively expensive goods or services with cheaper alternatives when prices change.

Household Welfare: The general economic and material well-being of household members, reflected partly in their ability to obtain adequate food, housing, healthcare, education and other necessities.

Project – Inflationary Pressure and Household Consumption Patterns in Nigeria: A Study of Selected Households in Ikeja Local Government Area, Lagos State