Guides
Charleston Tax & Accounting Guides
Two kinds of list. The first helps you compare Charleston CPA firms for a particular kind of business, and because we are one of those firms, each says so under the headline. The second kind ranks nothing and sells nothing: deductions, deadlines, records and software, with the source beside the rule.
Choosing a CPA
Lists of accounting firms by industry. We put ourselves first on our own list and say so on every page; every other firm is described only from what its own website says.
- Best CPA Firms in Charleston, SC (2026)Haigler CPA Group's 2026 list of CPA firms with Charleston-area offices, from a James Island tax practice to regional firms offering audit work.
- Best Small Business Accountants in Charleston (2026)Haigler CPA Group's 2026 list of Charleston-area CPA firms for small businesses: tax, bookkeeping and planning, with what each firm's own site says.
- Best Construction CPAs in Charleston (2026)Haigler CPA Group's 2026 list of Charleston CPA firms for general contractors, builders and developers, including firms that do reviews and audits for bonding.
- Best CPAs for Dental and Medical Practices in Charleston (2026)Haigler CPA Group's 2026 list of Charleston-area CPA firms for dentists, physicians and medical practices, with what each firm says it does and how to choose.
- Best CPAs for Real Estate Investors in Charleston (2026)Haigler CPA Group's 2026 list of Charleston-area CPA firms for rental property owners and real estate investors, with what each firm offers and how to choose.
- Best International Tax CPAs for U.S. Expats (2026)Haigler CPA Group's 2026 list of tax firms for Americans abroad, covering expat returns, FBAR and FATCA reporting and catch-up filings, and how to choose one.
- Best CPAs for Law Firms in Charleston (2026)Haigler CPA Group's 2026 list of Charleston-area CPA firms for solo attorneys and law firms, with what each firm offers and how SC trust account rules fit in.
- Best CPAs for Contractors and Trades in the Lowcountry (2026)Haigler CPA Group's 2026 list of CPA firms for Lowcountry HVAC, plumbing, electrical and specialty subcontractors, and what to look for in one.
Tax and bookkeeping lists
Reference lists for business owners, investors and Americans abroad. None of them ranks a firm.
- Best Accounting Software for ContractorsSeven accounting and job-costing tools contractors use, from QuickBooks and Xero to FOUNDATION, Knowify, JobTread, ServiceTitan and Procore, and how to choose.
- Best Tax Deductions for Real Estate InvestorsNine deductions and rules rental investors use in 2026: depreciation, 100% bonus, repairs, interest, QBI, passive loss relief and how South Carolina differs.
- Best Tax Tips for U.S. Citizens Living AbroadTen U.S. tax tips for Americans abroad: filing when nothing is owed, the June 15 extension, FBAR, Form 8938, exclusion vs. credit and self-employment tax.
- Best Bookkeeping Apps for Small BusinessesSeven bookkeeping and receipt apps small businesses use, including QuickBooks Online, Xero, FreshBooks, Wave, Zoho Books, Dext and Expensify.
- Biggest Tax Mistakes Small Business Owners MakeEleven costly tax mistakes small business owners make in 2026, from missed estimates and the new $2,000 1099 threshold to payroll deposits and SC depreciation.
- Best Retirement Plans for Small Business OwnersSEP-IRA, Solo 401(k), SIMPLE IRA, 401(k), profit-sharing and defined benefit plans compared, with 2026 setup deadlines and startup tax credits.
- Best Business Entity Types for South Carolina BusinessesSole proprietorship, partnership, LLC, S corp or C corp? How each is taxed in South Carolina, including the 3% pass-through election and 5% corporate rate.
- Best Tax Records to Keep and for How LongHow long to keep tax records: the IRS 3, 6 and 7-year rules, 4 years for payroll, 5 for FBAR, property basis records and South Carolina's 36-month limit.
- Key FBAR and FATCA Deadlines for ExpatsFBAR, Form 8938, the June 15 expat extension, Form 4868, Form 2350 and Form 3520 dates for U.S. citizens abroad, with the 2026 and 2027 calendar dates.
- Best Ways to Reduce Self-Employment TaxSeven legitimate ways to lower self-employment tax in 2026, from business deductions and depreciation to an S corporation election, and what does not help.
- Key South Carolina Tax DeadlinesSouth Carolina income, estimated, withholding, sales, S corp and C corp tax due dates for late 2026 and 2027, plus Charleston property tax and license dates.
- Best Charleston Resources for Small BusinessesTwelve Charleston-area and South Carolina resources for small businesses: SBDC, SBA, chamber, incubators, business licenses and state tax registration.
The information on this site is general in nature and is not tax, legal, or accounting advice for your situation. Tax law changes and the right answer depends on facts we would need to review with you. Please speak with a qualified professional before acting on anything you read here.
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