What Is an Application Programming Interface (API)?

An application programming interface (API) is a set of programming codes that queries data, parse responses, and sends instructions between one software platform and another. APIs are used extensively in providing data services across a range of fields and contexts.

APIs have become increasingly popular tools, with the likes of Meta (formerly Facebook), Amazon, SalesForce, and many more establishing their own APIs that allow companies to access some of their services without having to fully migrate into their ecosystem. This new paradigm has led to the rise of what some experts call the “API economy,” a model that enhances a company’s bottom line by improving interoperability and thus creating new systems from existing ones.

In the domain of financial markets and trading, one may use an API to establish a connection between a set of automated trading algorithms and the trader’s preferred trading broker platform for the purpose of obtaining real-time quotes and pricing data or to place electronic trades.

Understanding Application Programming Interfaces (APIs)

APIs have become increasingly popular with the rise of automated trading systems. In the past, retail traders were forced to screen for opportunities in one application and separately place trades with their broker. Many retail brokers now provide APIs that enable traders to directly connect their screening software with the brokerage account to share real-time prices and place orders. Traders can even develop their own applications using programming languages like Python and execute trades using a broker’s API.

Two types of traders use broker APIs:

• Third-Party Applications – Many traders use third-party applications that require access to broker APIs for pricing data and placing trades. For example, MetaTrader is one of the most popular foreign exchange (forex) trading applications and requires API access to secure real-time pricing and place trades.
• Developer Applications – A growing number of traders develop their own automated trading systems, using programming languages like Python, and require a way to access pricing data and place trades.

Despite the apparent benefits of APIs, there are many risks to consider. Most APIs are provided to a broker’s customers free of charge, but there are some cases where traders may incur an extra fee. It’s important to understand these fees before using the API.

Traders should also be aware of any API limitations, including the potential for downtime, which could significantly affect trading results.

Where to Find APIs for Traders

The most popular brokers supporting API access in the traditional stock and futures markets include TradeStation, TDAmeritrade, and InteractiveBrokers, but many smaller brokers have expanded access over time. APIs are more common among forex brokers where third-party applications and trading systems—such as MetaTrader—have been commonly used for many years.

Many brokers provide online documentation for their APIs. Developers can find out exactly how to authenticate with the API, what data is available for consumption, how to place orders through the API, and other technical details. It’s essential to be familiar with these details before choosing a broker when looking for specific functionality.

Some brokers also provide libraries in various languages to make interaction with their API easier. For example, a broker may offer a Python library that provides a set of functions, or methods, for placing a trade rather than having to write your own functions to do so. This can help accelerate the development of trading systems and make them less costly to develop.

What Is an Account Number?

An account number is a unique string of numbers and, sometimes, letters and other characters that identify the owner of an account and grant access to it. In the U.S., the Social Security number was the primary identifier until its vulnerability to identity theft forced the practice to be abandoned. In today’s electronic age, the most important account number for many people is the checking account number.

How an Account Number Works

The checking account number is located at the bottom of the paper check. You’ll see three sets of numbers in a computer-readable font at the bottom of the check:

• The first number on the left is the nine-digit bank routing number.
• The middle number is your account number.
• The third number is the number of the check.

Payroll processing offices use checking account numbers to set up direct deposit payments for employees.

In addition to checks, account numbers are attached to just about any transaction a consumer or business can make. Sales receipts, subscription services, credit card accounts, and store club memberships all have them.

Protecting Account Numbers

Identification numbers, in addition to passwords, are vulnerable to identity theft and fraud. This is why we have to answer annoying questions about our mothers’ maiden names when we try to make routine changes to an account. The means of making it difficult for hackers to steal account numbers currently are taking the form of password managers along with multi-factor authentication systems.

Modern businesses now often employ a hard-to-hack master password to unlock an electronic vault of customers’ account numbers and other sensitive data. Consumers are becoming accustomed to multifactor authentication, which adds another step before accessing an account, such as a fingerprint, voice activation, or a time-sensitive code sent to the cellphone number on record.

These are just some of the means of protecting users’ account numbers in an increasingly vulnerable online environment.

Account Number vs. Routing Number

On a paper check, the nine-digit routing number identifies specific financial institutions within the U.S. The number identifies the check as having been issued by a federal- or state-chartered bank that maintains an account with the Federal Reserve.

This system dates back to 1910 and was developed initially as a way to help bank clerks sort through piles of checks and assign them to the correct drawer. Today, electronic services use them in much the same way for wire transfers, to draw a payment from a deposit at the correct institution.

The account number works together with the routing number to identify the right account holder at the right institution.

How to Locate Your Account Number

You can find your account number on your monthly bank statement, or by visiting a branch of your bank.

If you are using a checking account, the account number is also printed on your paper checks. You can find it printed between the bank’s routing number and the check number, as shown below.

The Bottom Line

An account number is a unique identifier for each account at a bank or other financial institution that you have. Along with the routing number, this number is used to make payments and deposits. Due to the increase in identity theft and fraud, it is important to protect your account number and other banking information.

What Is the Amortization of Intangibles?

Amortization of intangibles, also simply known as amortization, is the process of expensing the cost of an intangible asset over the projected life of the asset for tax or accounting purposes. Intangible assets, such as patents and trademarks, are amortized into an expense account called amortization. Tangible assets are instead written off through depreciation. The amortization process for corporate accounting purposes may differ from the amount of amortization used for tax purposes.

Understanding the Amortization of Intangibles

For tax purposes, the cost basis of an intangible asset is amortized over a specific number of years, regardless of the actual useful life of the asset (as most intangibles don’t have a set useful life). The Internal Revenue Service (IRS) allows intangibles to be amortized over a 15-year period if it’s one of the ones included in Section 197.

Intangible assets are non-physical assets that can be assigned an economic value. Intellectual property (IP) is considered to be an intangible asset and is a broad term that encompasses most intangible assets. Most IP is covered under Section 197. Examples of these Section 197 intangible assets include patents, goodwill, trademarks, and trade and franchise names.

Not all IP is amortized over the 15-year period set by the IRS, however. There are certain exclusions, such as software acquired in a transaction that is readily available for purchase by the general public, subject to a nonexclusive license, and has not been substantially modified. In those cases and select others, the intangibles are amortized under Section 167.

Special Considerations

When a parent company purchases a subsidiary company and pays more than the fair market value (FMV) of the subsidiary’s net assets, the amount over fair market value is posted to goodwill (an intangible asset). IP is initially posted as an asset on the firm’s balance sheet when it is purchased.

IP can also be internally generated by a company’s own research and development (R&D) efforts. For instance, a company may win a patent for a newly developed process, which has some value. That value, in turn, increases the value of the company and so must be recorded appropriately.

In either case, the process of amortization allows the company to write off annually a part of the value of that intangible asset according to a defined schedule.

Amortization vs. Depreciation

Assets are used by businesses to generate revenue and produce income. Over a period of time, the costs related to the assets are moved into an expense account as the useful life of the asset dwindles. By expensing the cost of the asset over a period of time, the company is complying with GAAP, which requires the matching of revenue with the expense incurred to generate the revenue.

Tangible assets are expensed using depreciation, and intangible assets are expensed through amortization. Depreciation generally includes a salvage value for the physical asset—the value that the asset can be sold for at the end of its useful life. Amortization doesn’t take into account a salvage value.

Types of Amortization

For accounting (financial statement) purposes, a company can choose from six amortization methods: straight line, declining balance, annuity, bullet, balloon, and negative amortization. There are only four depreciation methods that can be used for accounting purposes: straight line, declining balance, sum-of-the-years’ digits, and units of production.

For tax purposes, there are two options for amortization of intangibles that the IRS allows. These are straight line and the income forecast method. The income forecast method can be used instead of the straight-line method if the asset is: motion picture films, videotapes, sound recordings, copyrights, books, or patents. For depreciation of physical assets, the IRS only allows the Modified Accelerated Cost Recovery System (MACRS).

Example of Amortization

Assume, for example, that a construction company buys a $32,000 truck to contractor work, and that the truck has a useful life of eight years. The annual depreciation expense on a straight-line basis is the $32,000 cost basis minus the expected salvage value—in this case, $4,000—divided by eight years. The annual deprecation for the truck would be $3,500 per year, or ($32,000 – $4,000) ÷ 8.

On the other hand, assume that a corporation pays $300,000 for a patent that allows the firm exclusive rights over the intellectual property for 30 years. The firm’s accounting department posts a $10,000 amortization expense each year for 30 years.

Both the truck and the patent are used to generate revenue and profit over a particular number of years. Since the truck is a physical asset, depreciation is used, and since the rights are intangible, amortization is used.

What Is Adjusted Gross Income (AGI)?

Adjusted gross income (AGI) is the figure that the Internal Revenue Service (IRS) uses to determine your income tax liability for the year. It is calculated by subtracting certain adjustments from gross income, such as business expenses, student loan interest payments, and other expenses. After calculating a taxpayer’s AGI, the next step is to subtract deductions to determine their taxable income.

The IRS also uses other income metrics, such as modified AGI (MAGI), for specific programs and retirement accounts.

Understanding Adjusted Gross Income (AGI)

As prescribed in the United States tax code, AGI is a modification of gross income. Gross income is simply the sum of all the money you earned in a year, which may include wages, dividends, capital gains, interest income, royalties, rental income, alimony, and retirement distributions, before tax or other deductions. AGI makes certain adjustments to your gross income to reach the figure on which your tax liability will be calculated.

Many U.S. states also use the AGI from federal returns to calculate how much individuals owe in state income taxes. States may modify this number further with state-specific deductions and credits.

Common Adjustments

The items subtracted from your gross income to calculate your AGI are referred to as adjustments to income, and you report them on Schedule 1 of your tax return when you file your annual tax return. Some of the most common adjustments are listed here, along with the separate tax forms on which a few of them are calculated:

• Alimony payments (for divorces filed before Jan. 1, 2019)
• Early withdrawal penalties on savings
• Educator expenses
• Employee business expenses for armed forces reservists, qualified performing artists, fee-basis state or local government officials, and employees with impairment-related work expenses (Form 2106)
• Health Savings Account (HSA) deductions (Form 8889)
• Moving expenses for members of the armed forces (Form 3903)
• Self-employed Simplified Employee Pension (SEP), Savings Incentive Match Plan for Employees of Small Employers (SIMPLE), and qualified plans
• Self-employed health insurance deduction
• Self-employment tax (the deductible portion)
• Student loan interest deduction

How to Calculate Adjusted Gross Income

If you use software to prepare your tax return, it will calculate your AGI once you input your numbers. If you calculate it yourself, you’ll begin by tallying your reported income for the year. That might include job income, as reported to the IRS by your employer on a W-2 form, plus other income, such as dividends and miscellaneous income, reported on 1099 forms.

Next, you add any taxable income from other sources, such as profit on the sale of a property, unemployment compensation, pensions, Social Security payments, or anything else that hasn’t already been reported to the IRS. Many of these income items are also listed on IRS Schedule 1.

The next step is to subtract the applicable adjustments to the income listed above from your reported income. The resulting figure is your AGI. To determine your taxable income, subtract either the standard deduction or your total itemized deductions from your AGI. In most cases, you can choose whichever gives you the most benefit.

For example, the standard deduction for tax returns for married couples filing jointly was $25,900 in 2022, rising to $27,700 in 2023, so couples whose itemized deductions exceed that amount would generally opt to itemize, while others would take the standard deduction.

The IRS provides a list of itemized deductions and the requirements for claiming them on its website. Your AGI also affects your eligibility for many of the deductions and credits available on your tax return. In general, the lower your AGI, the more significant the number of deductions and credits you will be eligible to claim, and the more you’ll be able to reduce your tax bill.

An Example of AGI Affecting Deductions

Let’s say you had some significant dental expenses during the year that weren’t reimbursed by insurance, and you’ve decided to itemize your deductions. You are allowed to deduct the portion of those expenses that exceed 7.5% of your AGI.

This means that if you report $12,000 in unreimbursed dental expenses and have an AGI of $100,000, you can deduct the amount that exceeds $7,500, which is $4,500. However, if your AGI is $50,000, the 7.5% reduction is just $3,750, and you’d be entitled to deduct a larger amount of that $12,000, in this case $8,250.

Adjusted Gross Income (AGI) vs. Modified Adjusted Gross Income (MAGI)

In addition to AGI, some tax calculations and government programs call for using what’s known as your modified adjusted gross income, or MAGI. This figure starts with your AGI, then adds back certain items, such as any deductions you take for student loan interest or tuition and fees.

Your MAGI is used to determine how much, if anything, you can contribute to a Roth individual retirement account (Roth IRA) in any given year. It is also used to calculate your income if you apply for Marketplace health insurance under the Affordable Care Act (ACA).

Many people with relatively uncomplicated financial lives find that their AGI and MAGI are the same number or very close.

Adjusted Gross Income vs. Gross Income vs. Taxable Income

Your gross income is all of the money you’ve earned in a year that isn’t exempt from taxation. This can be in the form of salary, wages, interest, dividends, capital gains, and so on.

Your adjusted gross income takes that amount and takes out certain qualified expenses and adjustments.

Taxpayers can then take either the standard deduction for their filing status or itemize the deductible expenses they paid during the year. You’re not permitted to both itemize deductions and claim the standard deduction. The result is your taxable income.

Frequently Asked Questions

The Bottom Line

Adjusted gross income, or AGI, is your gross income after it has been adjusted for certain qualified deductions that are permitted by the Internal Revenue Service (IRS). These qualified deductions reduce an individual’s gross income, thus reducing the taxable income that they will ultimately have to pay taxes on. You can save money come tax season by lowering your AGI, which will lower your taxable income, in turn. However, many of the adjustments allowed for AGI are specific for particular circumstances that may not apply to everyone.