- AAA
- AARP
- A Shares
- A-B Trust
- Abenomics
- Ability-to-Pay Taxation
- Abnormal Return
- Absolute Advantage
- Absolute Return
- Absorption Costing
- Absorption Rate
- Acid Test Ratio
- Accelerated Depreciation
- Acceleration Clause
- Acceptable Quality Level
- Accepting Risk
- Accidental Death and Dismemberment (AD&D) Insurance
- Accidental Death Benefit
- Account Balance
- Account in Trust
- Account Number
- Account Statement
- Accountability
- Accountant
- Accounting
- Accounting Conservatism
- Accounting Cycle
- Accounting Equation
- Accounting Information System
- Accounting Method
- Accounting Policies
- Accounting Principles
- Accounting Profit
- Accounting Rate of Return (ARR)
- Accounting Ratio
- Accounting Standard
- Accounting Theory
- Accounting Payable
- Accounts Payable Turnover Ratio
- Accounts Receivable
- Accounts Receivable Aging
- Accounts Receivable Financing
- Accredited Asset Management Specialist
- Accredited in Business Valuation
- Accredited Investor
- Accretion
- Accretion of Discount
- Accretive
- Accrual Accounting
- Accruals
- Accrue
- Accrued Expense
- Accrued Income
- Accrued Interest
- Accrued Liability
- Accrued Revenue
- Accumulated Depreciation
- Accumulated Other Comprehensive Income
- Accumulation Phase
- Accumulation/Distribution Indicator (A/D)
- Acquisition
- Acquisition Accounting
- Acquisition Cost
- Acquisition Premium
- Active Management
- Activist Investor
- Activities of Daily Living (ADL)
- Activity Based Budgeting (ABB)
- Activity Based Costing (ABC)
- Activity Based Management (ABM)
- Activity Cost Driver
- Activity Ratios
- The Actual Deferral Percentage and Actual Contribution Percentage Test (ADP/ACP)
- Actuarial Gain or Loss
- Actuarial Life Table
- Actuarial Science
- Ad Valorem Tax
- Add-On Interest
- Additional Child Tax Credit
- Additional Paid-In Capital
- Addition Rule for Probabilities
- Adhesion Contract
- Adjudication
- Adjustable Life Insurance
- Adjustable Rate Mortgage (ARM)
- Adjusted Closing Price
- Adjusted EBITDA
- Adjusted Funds from Operations
- Adjusted Gross Income (AGI)
- Adjusted Present Value (APV)
- Adjusting Journal Entry
- Adverse Selection
- Administrative Expenses
- Administrative Services Only
- Advance/Decline Line
- Advance Payment
- Advanced Internal Rating-Based
- Adverse Possession
- Adverse Selection
- Advertising Budget
- Affiliate
- Affiliated Companies
- Affiliate Marketing
- Affirmative Action
- Affordable Care Act
- After-Hours Trading
- After-Tax Contribution
- After-Tax Income
- After-Tax Real Rate of Return
- Agency Bond
- Agency Costs
- Agency by Necessity
- Agency Problem
- Agency Theory
- Agent
- Aggregate Demand
- Aggregate Stop Loss Insurance
- Aggregate Supply
- Aggregation
- Aggressive Investment Strategy
- Agribusiness
- Air Waybill (AWB)
- Aktiengesellschaft (AG)
- Aleatory Contract
- Algorithmic Trading
- All Risks
- Allocated Loss Adjustment Expenses (ALAE)
- Allocational Efficiency
- Allotment
- Allowance for Bad Debt
- Allowance for Credit Losses (ACL)
- Allowance for Doubtful Accounts
- Alpha
- Alphabet Stock
- Altcoin
- Alternative Depreciation System (ADS)
- Always be Closing (ABC)
- Amalgamation
- Amended Return
- American Depositary Receipt (ADR)
- American Depositary Share (ADS)
- American Dream
- American Express Card
- American Opportunity Tax Credit (AOTC)
- American Option
- American Stock Exchange (AMEX)
- American with Disabilities Act (ADA)
- Amortizable Bond Premium
- Amortization of Intangible Assets
- Amortization Schedule
- Amortized Bond
- Amortized Loan
- Amsterdam Stock Exchange
- Analysis of Variance
- Anchoring
- Angel Investor
- Animal Spirit
- Annual Equivalent Rate (AER)
- Annual General Meeting (AGM)
- Annual Percentage Rate
- Annual Percentage Yield (APY)
- Annual Report
- Annual Return
- Annual Turnover
- Annualize
- Annualized Income
- Annualized Income Installment Method
- Annualized Rate of Return (ARR)
- Annualized Total Return
- Annuitant
- Annuitization
- Annuity
- Annuity Due
- Anomaly
- Anti-Dilution Provision
- Anti-Dumping Duty
- Anti Money Laundering
- Anticipatory Breach
- Antitrust
- Appellate Courts
- Applicable Federal Rate
- Application Programming Interface (API)
- Application Specific Integrated Circuit (ASIC)
- Applied Economics
- Appraisal
- Appraisal Costs
- Appraisal Management Company
- Appreciation
- Appropriation
- Appropriation Account
- Aptitude Test
- Arab League
- Arbitrage
- Arbitrage Pricing Theory (APT)
- Arbitrageur
- Arbitration
- Arc Elasticity
- Arithmetic Mean
- Arm's Length Transaction
- Arms Index (TRIN)
- Aroon Indicator
- Arrow's Impossibility Theorem
- Article 50
- Articles of Association
- Articles of Incorporation
- Artificial Intelligence
- Ascending Channel
- Ascending Triangle
- Asia Pacific Economic Cooperation (APEC)
- Asian Development Bank
- Asian Financial Crisis
- Asian Infrastructure Investment Bank
- Assemble to Order (ATO)
- Assessed Value
- Asset
- Asset Allocation
- Asset-Backed Commercial Paper (ABCP)
- Asset-Backed Securities (ABS)
- Asset-Based Approach
- Asset-Based Lending
- Asset Class
- Asset Coverage Ratio
- Asset Financing
- Asset-Liability Committee (ALCO)
- Asset/Liability Management
- Asset Management
- Asset Management Company (AMC)
- Assets Protection
- Asset Retirement Obligation (ARO)
- Asset Swap
- Asset-Swapped Convertible Option Transaction (ASCOT)
- Asset Turnover Ratio
- Assets Under Management
- Asset Valuation
- Assignment
- Assortment Strategies
- Assumable Mortgage
- Assurance
- Assurance Services
- Asymmetric Information
- At Par
- Atomic Swaps
- At The Money
- Attorney-in-Fact
- Attribution Analysis
- Attrition
- Auction Market
- Audit
- Audit Committee
- Audit Risk
- Auditor
- Auditor
- Auditor's Opinion
- Auditor's Report
- Augmented Product
- Austerity
- Australian Securities Exchange (ASX)
- Autarky
- Authorized Stock
- Autocorrelation
- Automated Customer Account Transfer Service
- Automated Teller Machine
- Automatic Bill Payment
- Automatic Premium Loan
- Automatic Stabilizer
- Autonomous Consumption
- Autonomous Expenditure
- Autoregressive
- Autoregressive Integrated Moving Average
- Available Balance
- Available-for-Sale Security
- Average Age of Inventory
- Average Annual Growth Rate (AAGR)
- Average Annual Return (AAR)
- Average Inventory
- Average Collection Period
- Average Cost Basis
- Average Cost Method
- Average Daily Balance Method
- Average Daily Rate
- Average Daily Trading Volume
- Average Directional Index
- Average Life
- Average Outstanding Balance
- Average Prospensity to Consume (APC)
- Average Return
- Average Selling Price (ASP)
- Average True Range
- Axe