William Costley LLC

William Costley LLC is a tax attorney and accounting practice in Woodstock, GA, serving small businesses across North Atlanta, including Woodstock, Milton and Johns Creek. The firm provides monthly bookkeeping and accounting, strategic tax planning and preparation, guidance on tax payments and payroll, CFO-level financial analysis, IRS representation and resolution, business setup and optimization, and advisory and consultation services. Owner and founder William A. Costley, Jr. is an Enrolled Agent. The practice holds a rating of 4.90.

The firm's work covers clean, accurate books delivered monthly, payroll processing and tax deposits, and real-time financial dashboards, along with year-round tax strategy that includes proactive quarterly tax planning, business and personal tax filing, and entity structure optimization. Payroll and tax payment guidance is built around ending the year without surprises, avoiding costly mistakes, and staying compliant. CFO-level analysis includes monthly financial reporting and KPIs, cash flow forecasting and budgeting, and profitability analysis by service or product. IRS representation covers audit defense and representation, back tax resolution and payment plans, and penalty abatement and negotiation. Business setup work includes entity formation and registration, QuickBooks setup and training, and accounting system design, while advisory services cover year-end tax planning meetings, business growth strategy sessions, and on-demand financial guidance.

The office is on Towne Lake Hills East, about a third of a mile from Towne Lake Parkway and half a mile from Noonday Creek and Towne Lake Hills Golf Club. Eagle Drive is roughly seven tenths of a mile away, and Etowah East Annex and ET Booth Middle School each sit about eight tenths of a mile from the office.

Costley founded the practice after watching his parents struggle with poor financial advice, and he built it around listening first, strategizing second, and executing with precision. He and his wife Christi have called North Georgia home for years, and the practice works with local business owners on matters such as tax credits for restaurants and restructuring for construction companies.

For Woodstock and North Atlanta business owners who want year-round accounting support rather than a once-a-year filing, William Costley LLC pairs Enrolled Agent representation with the bookkeeping, tax planning and financial analysis a growing company needs.