What Is the 183-Day Rule?

The 183-day rule is used by most countries to determine if someone should be considered a resident for tax purposes. In the U.S., the Internal Revenue Service (IRS) uses 183 days as a threshold in the “substantial presence test,” which determines whether people who are neither U.S. citizens nor permanent residents should still be considered residents for taxation.

Understanding the 183-Day Rule

The 183rd day of the year marks a majority of the days in a year, and for this reason countries around the world use the 183-day threshold to broadly determine whether to tax someone as a resident. These include Canada, Australia, and the United Kingdom, for example. Generally, this means that if you spent 183 days or more in the country during a given year, you are considered a tax resident for that year.

Each nation subject to the 183-day rule has its own criteria for considering someone a tax resident. For example, some use the calendar year for its accounting period, whereas some use a fiscal year. Some include the day the person arrives in their country in their count, while some do not.

Some countries have even lower thresholds for residency. For example, Switzerland considers you a tax resident if you have spent more than 90 days there.

The IRS and the 183-Day Rule

The IRS uses a more complicated formula to reach 183 days and determine whether someone passes the substantial presence test. To pass the test, and thus be subject to U.S. taxes, the person in question must:

• Have been physically present at least 31 days during the current year and;
• Present 183 days during the three-year period that includes the current year and the two years immediately preceding it.

Those days are counted as:

• All of the days they were present during the current year
• One-third of the days they were present during the previous year
• One-sixth of the days present two years previously

Other IRS Terms and Conditions

The IRS generally considers someone to have been present in the U.S. on a given day if they spent any part of a day there. But there are some exceptions.

Days that do not count as days of presence include:

• Days that you commute to work in the U.S. from a residence in Canada or Mexico if you do so regularly
• Days you are in the U.S. for less than 24 hours while in transit between two other countries
• Days you are in the U.S. as a crew member of a foreign vessel
• Days you are unable to leave the U.S. because of a medical condition that develops while you are there
• Days in which you qualify as exempt, which includes foreign-government-related persons under an A or G visa, teachers and trainees under a J or Q visa; a student under an F, J, M, or Q visa; and a professional athlete competing for charity

U.S. Citizens and Resident Aliens

Strictly speaking, the 183-day rule does not apply to U.S. citizens and permanent residents. U.S. citizens are required to file tax returns regardless of their country of residence or the source of their income.

However, they may exclude at least part of their overseas earned income (up to $108,700 in 2021) from taxation provided they meet a physical presence test in the foreign country and paid taxes there. To meet the physical presence test, the person needs to be present in the country for 330 complete days in 12 consecutive months.

U.S. Tax Treaties and Double Taxation

The U.S. has tax treaties with other countries to determine jurisdiction for income tax purposes and to avoid double taxation of their citizens. These agreements contain provisions for the resolution of conflicting claims of residence.

Residents of these partner nations are taxed at a lower rate and may be exempt from U.S. taxes for certain types of income earned in the U.S. Residents and citizens of the U.S. are also taxed at a reduced rate and may be exempt from foreign taxes for certain income earned in other countries. It is important to note that some states do not honor these tax treaties.

183 Day Rule FAQs 

How Many Days Can You Be in the U.S. Without Paying Taxes?

The IRS considers you a U.S. resident if you were physically present in the U.S. on at least 31 days of the current year and 183 days during a three-year period. The three-year period consists of the current year and the prior two years. The 183-day rule includes all the days present in the current year, 1/3 of the days you were present in year 2, and 1/6 of the days you were present in year 1.

How Long Do You Have to Live in a State Before You’re Considered a Resident?

Many states use the 183-day rule to determine residency for tax purposes, and what constitutes a day varies among states. For instance, any time spent in New York, except for travel to destinations outside of New York (e.g., airport travel), is considered a day. So, if you work in Manhattan but live in New Jersey, you may still be considered a New York resident for tax purposes even if you never spend one night there.

It is important to consult the laws of each state that you frequent to determine if you are required to pay their income taxes. Also, some states have special agreements whereby a resident who works in another state is only required to pay taxes in the state of their permanent residence—where they are domiciled.

How Do I Calculate the 183-Day Rule?

For most countries that apply this rule, you are a tax resident of that country if you spend 183 or more there. The United States, however, has additional criteria for applying the 183-rule. If you were physically present in the U.S. on at least 31 days of the current year and 183 days during a three-year period, you are a U.S. resident for tax purposes. Additional stipulations apply to the three-year threshold.

How Do I Know if I Am a Resident for Tax Purposes?

If you meet the IRS criteria for being qualified as a resident for tax purposes and none of the qualified exceptions apply, you are a U.S. resident. You are a tax resident if you were physically present in the U.S. for 31 days of the current year and 183 days in the last three years, including the days present in the current year, 1/3 of the days from the previous year, and 1/6 of the days from the first year.

The IRS also has rules regarding what constitutes a day. For example, commuting to work from a neighboring country (e.g., Mexico and Canada) does not count as a day. Also, exempt from this test are certain foreign government-related individuals, teachers, students, and professional athletes temporarily in the United States.

Do I Meet the Substantial Presence Test?

It is important to consult the laws of the country for which the test will be performed. If wanting to find out about meeting the U.S.’s substantial presence test, you must consider the number of days present within the last three years.

First, you must have been physically present in the United States for 31 days of the current year. If so, count the full number of days present for the current year. Then, multiply the number of days present in year 1 by 1/6 and the days in year 2 by 1/3. Sum the totals. If the result is 183 or more, you are a resident. Lastly, if none of the IRS qualifying exceptions apply, you are a resident.

What Is Average Propensity to Consume?

Average propensity to consume (APC) measures the percentage of income that is spent rather than saved. This may be calculated by a single individual who wants to know where the money is going or by an economist who wants to track the spending and saving habits of an entire nation.

In either case, the propensity to consume can be determined by dividing average household consumption, or spending, by average household income, or earnings.

Understanding Average Propensity to Consume

From the broader economic view, a high average propensity to consume is generally good for the economy. When the average propensity to consume is high, consumers are saving less and spending more on goods or services. This increased demand drives economic growth, business expansion, and broad employment.

Low-income households are often seen as having a higher average propensity to consume than high-income households. Low-income households may be forced to spend their entire income on necessities with minimal disposable income remaining to save. Alternatively, high-income households with higher cash flow after their necessities are met typically have a relatively lower average propensity to consume.

Economists often gauge economy forecasts on actions by the middle-income households. The spending and savings patterns of this demographic often indicate a degree of confidence or pessimism about their own personal financial situations and the economy as a whole.

Propensity to Consume vs. Propensity to Save

The sum of the average propensity to consume and the average propensity to save is always equivalent to one. A household or a nation must either spend or save all of its income.

The inverse of the average propensity to consume is the average propensity to save (APS). That figure is simply the total of income minus spending. The result is known as the savings ratio.

Notably, the savings ratio is normally based on its percentage of disposable income, or after-tax income. An individual determining personal propensities to consume and save should probably use the disposable income figure as well for a more realistic measure.

Example of Average Propensity to Consume

Assume a nation’s economy has a gross domestic product (GDP) equivalent to its disposable income of $500 billion for the previous year. The total savings of the economy was $300 billion, and the rest was spent on goods and services.

The nation’s APS is calculated to be 0.60, or $300 billion/$500 billion. This indicates the economy allocated 60% of its disposable income to savings. The average propensity to consume is calculated to be 0.40, or (1 – 0.60). Therefore, the nation spent 40% of its GDP on goods and services.

APS can include saving for retirement, a home purchase, and other long-term investments. As such, it can be a proxy for national financial health.

Special Considerations

The marginal propensity to consume (MPC) is a related concept. It measures the change in the average propensity to consume.

Assume that the nation in the previous example increased its GDP to $700 billion and its consumption of goods and services rose to $375 billion. The economy’s average propensity to consume increased to 53.57%.

The nation’s consumption increased from $200 billion to $375 billion. Alternatively, the nation’s GDP increased from $500 billion to $700 billion. The nation’s marginal propensity to consume is 87.5% ($375 billion – $200 billion) / ($700 billion – $500 billion). The marginal propensity measures the directional trend of how an entity is utilizing its money. In this case, 87.5% of new growth was further consumed.

What Is Accounts Receivable Aging?

Accounts receivable aging is a periodic report that categorizes a company’s accounts receivable according to the length of time an invoice has been outstanding. It is used as a gauge to determine the financial health and reliability of a company’s customers.

If the accounts receivable aging shows a company’s receivables are being collected much more slowly than normal, this is a warning sign that business may be slowing down or that the company is taking greater credit risk in its sales practices.

How Accounts Receivable Aging Works

Accounts receivable aging, as a management tool, can indicate that certain customers are becoming credit risks, and may reveal whether the company should keep doing business with customers that are chronically late payers. 

Accounts receivable aging has columns that are typically broken into date ranges of 30 days each and shows the total receivables that are currently due, as well as those that are past due for each 30-day time period.

Allowance for Doubtful Accounts

Accounts receivable aging is useful in determining the allowance for doubtful accounts. When estimating the amount of bad debt to report on a company’s financial statements, the accounts receivable aging report is useful to estimate the total amount to be written off.

The primary useful feature is the aggregation of receivables based on the length of time the invoice has been past due. Accounts that are more than six months old are unlikely to be collected, except through collections or a court judgment.

Companies apply a fixed percentage of default to each date range. Invoices that have been past due for longer periods of time are given a higher percentage due to increasing default risk and decreasing collectibility. The sum of the products from each outstanding date range provides an estimate regarding the total of uncollectible receivables.

Aged Receivables Report

The aged receivables report is a table that provides details of specific receivables based on age. The specific receivables are aggregated at the bottom of the table to display the total receivables of a company, based on the number of days the invoice is past due.

The typical column headers include 30-day windows of time, and the rows represent the receivables of each customer. Here’s an example of an accounts receivable aging report.

What Is Accumulated Depreciation?

Accumulated depreciation is the cumulative depreciation of an asset up to a single point in its life. Accumulated depreciation is a contra asset account, meaning its natural balance is a credit that reduces the overall asset value.

Understanding Accumulated Depreciation

The matching principle under generally accepted accounting principles (GAAP) dictates that expenses must be matched to the same accounting period in which the related revenue is generated. Through depreciation, a business will expense a portion of a capital asset’s value over each year of its useful life. This means that each year a capitalized asset is put to use and generates revenue, the cost associated with using up the asset is recorded.

Accumulated depreciation is the total amount an asset has been depreciated up until a single point. Each period, the depreciation expense recorded in that period is added to the beginning accumulated depreciation balance. An asset’s carrying value on the balance sheet is the difference between its historical cost and accumulated depreciation. At the end of an asset’s useful life, its carrying value on the balance sheet will match its salvage value.

When recording depreciation in the general ledger, a company debits depreciation expense and credits accumulated depreciation. Depreciation expense flows through to the income statement in the period it is recorded. Accumulated depreciation is presented on the balance sheet below the line for related capitalized assets. The accumulated depreciation balance increases over time, adding the amount of depreciation expense recorded in the current period.

How to Calculate Accumulated Depreciation

There are several acceptable methods for calculating depreciation. These methods are allowable under Generally Accepted Accounting Principles (GAAP). A company may select the depreciation method they wish to use.

Straight-Line Method

Under the straight-line method of accounting, a company deducts the asset’s salvage value from the purchase price to find a depreciable base. Then, this base is accumulated evenly over the anticipated useful life of the asset. The straight-line method formula is:

Annual Accumulated Depreciation = (Asset Value – Salvage Value) / Useful Life in Years

Imagine Company ABC buys a building for $250,000. The building is expected to be useful for 20 years with a value of $10,000 at the end of the 20th year. The depreciable base for the building is $240,000 ($250,000 – $10,000). Divided over 20 years, the company would recognized $20,000 of accumulated depreciation every year. 

Declining Balance Method

Under the declining balance method, depreciation is recorded as a percentage of the asset’s current book value. Because the same percentage is used in every year while the current book value decreases, the amount of depreciation decreases each year. Even though accumulated depreciation will still increase, the amount of accumulated depreciation will decrease each year.

Annual Accumulated Depreciation = Current Book Value * Depreciation Rate

For example, imagine Company ABC buys a company vehicle for $10,000 with no salvage value at the end of its life. The company decided it would depreciate 20% of the book value each year. In Year 1, Company ABC would recognize $2,000 ($10,000 * 20%) of depreciation and accumulated depreciation. In Year 2, Company ABC would recognize $1,600 (($10,000 – $2,000) * 20%).

Double-Declining Balance Method

Under the double-declining balance (also called accelerated depreciation), a company calculates what it’s depreciation would be under the straight-line method. Then, the company doubles the depreciation rate, keeps this rate the same across all years the asset is depreciated, and continues to accumulate depreciation until the salvage value is reached. The percentage can simply be calculated as twice of 100% divided by the number of years of useful life.

Double-Declining Balance Method Rate = (100% / Useful Life In Years) * 2

Double-Declining Balance Method = Depreciable Amount * Double-Declining Balance Method Rate

Let’s imagine Company ABC’s building they purchased for $250,000 with a $10,000 salvage value. Under the straight-line method, the company recognized 5% (100% depreciation / 20 years); therefore, it would use 10% as the depreciation base for the double-declining balance method. The company would recognize $24,000 ($240,000 depreciable base * 10%) in Year 1, and would recognize $21,600 (($240,000 depreciable base – $24,000) * 10%).

Sum-of-the-Years’ Digits Method

Under the sum-of-the-years’ digits method, a company strives to record more depreciation earlier in the life of an asset and less in the later years. This is done by adding up the digits of the useful years, then depreciating based on that number of year.

Annual Accumulated Depreciation = Depreciable Base * (Inverse Year Number / Sum of Year Digits)

Company ABC purchased a piece of equipment that has a useful life of 5 years. The asset has a depreciable base of $15,000. Since the asset has a useful life of 5 years, the sum of year digits is 15 (5+4+3+2+1). The depreciation rate is then the quotient of the inverse year number (Year 1 = 5, Year 2 = 4, Year 3 = 3, etc.) divided by 15. In Year 1, the company will recognize $5,000 ($15,000 * (5/15)) of depreciation and will recognize $4,000 ($15,000 * (4/15)) in Year 2.

Units of Production Method

Under the units of production method, a company estimates the total useful output of an asset. Then, the company evaluates how many of those units were consumed each year to recognize accumulated depreciation variably based on use. The formula for the units of production method is:

Annual Accumulated Deprecation = (Number of Units Consumed / Total Units To Be Consumed) * Depreciable Base

For example, a company buys a company vehicle and plans on driving the vehicle 80,000 miles. In the first year, the company drove the vehicle 8,000 miles. Therefore, it would recognize 10% (8,000 / 80,000) of the depreciable base. In the second year, if the company drives 20,000 miles, it would recognize 25% of depreciable base as an expense in the second year, with accumulated depreciation now equal to $28,000 ($8,000 in the first year + $20,000 in the second year).

Accumulated Depreciation vs. Accelerated Depreciation

Though similar sounding in name, accumulated depreciation and accelerated depreciation refer to very different accounting concepts. Accumulated depreciation refers to the life-to-date depreciation that has been recognized that reduces the book value of an asset. On the other hand, accelerated depreciation refers to a method of depreciation where a higher amount of depreciation is recognized earlier in an asset’s life.

Since accelerated depreciation is an accounting method for recognizing depreciation, the result of accelerated depreciation is to book accumulated depreciation. Under this method, the amount of accumulated depreciation accumulates faster during the early years of an asset’s life and accumulates slower later. The philosophy behind accelerated depreciation is assets that are newer (i.e. a new company vehicle) are often used more than older assets because they are in better condition and more efficient. 

Accumulated Depreciation vs. Depreciation Expense

When an asset is depreciated, two accounts are immediately impacted: accumulated depreciation and depreciation expense. The journal entry to record depreciation results in a debit to depreciation expense and a credit to accumulated depreciation. The dollar amount for each line is equal to the other.

There are two main differences between accumulated depreciation and depreciation expense. First, depreciation expense is reported on the income statement, while accumulated depreciation is reported on the balance sheet. 

Second, on a related note, the income statement does not carry from year-to-year. Activity is swept to retained earnings, and a company “resets” its income statement every year. Meanwhile, its balance sheet is a life-to-date running total that does not clear at year-end. Therefore, depreciation expense is recalculated every year, while accumulated depreciation is always a life-to-date running total.

Special Considerations

Accounting Adjustments/Changes in Estimate

Because the depreciation process is heavily rooted with estimates, it’s common for companies to need to revise their guess on the useful life of an asset’s life or the salvage value at the end of the asset’s life. This change is reflected as a change in accounting estimate, not a change in accounting principle. For example, say a company was depreciating a $10,000 asset over its five year useful life with no salvage value. Using the straight-line method, accumulated depreciation of $2,000 is recognized.

After two years, the company realizes the remaining useful life is not three years but instead six years. Under GAAP, the company does not need to retroactively adjust financial statements for changes in estimates. Instead, the company will change the amount of accumulated depreciation recognized each year. 

In this example, since the asset now has a $6,000 net book value ($10,000 purchase price less $4,000 of accumulated depreciation booked in the first two years), the company will now recognized $1,000 of accumulated depreciation for the next six years. 

Half-Year Recognition

A commonly practiced strategy for depreciating an asset is to recognize a half year of depreciation in the year an asset is acquired and a half year of depreciation in the last year of an asset’s useful life. This strategy is employed to more fairly allocate depreciation expense and accumulated depreciation in years when an asset may only be used part of a year. 

For example, Company A buys a company vehicle in Year 1 with a five year useful life. Regardless of the month, the company will recognize six months worth of depreciation in Year 1. The company will also recognize a full year of depreciation in Year 2 – 5. Then, the company will recognize the final half year of depreciation in Year 6. Although the asset only had a useful life of five years, it is argued that the asset wasn’t used for the entirety of Year 1 nor the entirety of Year 6.

Example of Accumulated Depreciation

Company A buys a piece of equipment with a useful life of 10 years for $110,000. The equipment is estimated to have a salvage value of $10,000. The equipment is going to provide the company with value for the next 10 years, so the company expenses the cost of the equipment over the next 10 years. Straight-line depreciation is calculated as (($110,000 – $10,000) / 10), or $10,000 a year. This means the company will depreciate $10,000 for the next 10 years until the book value of the asset is $10,000.

Each year the contra asset account referred to as accumulated depreciation increases by $10,000. For example, at the end of five years, the annual depreciation expense is still $10,000, but accumulated depreciation has grown to $50,000. That is, accumulated depreciation is a cumulative account. It is credited each year as the value of the asset is written off and remains on the books, reducing the net value of the asset, until the asset is disposed of or sold. It is important to note that accumulated depreciation cannot be more than the asset’s historical cost even if the asset is still in use after its estimated useful life.

The Bottom Line

Many companies rely on capital assets such as buildings, vehicles, equipment, and machinery as part of their operations. In accordance with accounting rules, companies must depreciate these assets over their useful lives. As a result, companies must recognize accumulated depreciation, the sum of depreciation expense recognized over the life of an asset. Accumulated depreciation is reported on the balance sheet as a contra asset that reduces the net book value of the capital asset section.