"AJSH & Co LLP"    is now    "Mercurius & Associates LLP" "AJSH & Co LLP"    is now    "Mercurius & Associates LLP" "AJSH & Co LLP"    is now    "Mercurius & Associates LLP"

Tax advisory services in USA


We offer tax advisory services in USA, UK, Canada, Australia, and Singapore.We assist companies with quarterly and annual tax provision calculations, validating tax balance sheet accounts, and tax process and controls. Our team of tax experts can help you with:

United States of America

  • Federal Individual Tax Returns
    (Form 1040 including Single Member LLC’s Schedule C, Schedule E, 1041,
    1040EZ, 1040NR, 1040A, and 1040X)
  • Federal Company Tax Returns
    (S-Corp Returns Form 1120S, C-Corp Returns Form 1120)
  • Federal Partnership Return (Form
  • Tax Exempt Returns (Form 990,
    990-EZ, 990-PF, 990-W, and 990-T)
  • State Income Tax Returns
  • Filing of State Annual Returns
    with SOS / DOR
  • Sales Tax Returns for
    approximately 30 states
  • Payment of payroll taxes and
    filing of returns (Form 940, Form 941, Form 941X), along with
    corresponding state payroll taxes and returns
  • Filing of Form 1099 and W-2
  • Filing of FBAR
  • Filing of Form 8832 for S-Corp
  • Various other forms such as
    SS-4, W-7, 4562, 8582, 8804, 8805, 1116, 2553, 2441, 2555, 4868, 7004,
    and others
  • Support on penalty notice from
United Kingdom
  • VAT registration and
  • Quarterly VAT returns
  • EC sales report
  • Maintaining VAT records and
  • Annual accounts with Companies
  • Confirmation statement with
    Companies House
  • Company tax return with HMRC
    (Form CT600)
  • Self-assessment tax return with
    HMRC (Form SA100)
  • Payroll processing
  • Calculation of PAYE / NI
  • RTI submissions, including FPS and EPS
  • P45: Tax paid on salary earned in a tax year
  • P60: Employee stops working with the employer
  • P11D: Benefits-in-Kind received by employer
  • Income tax return
  • T1: Personal tax
  • T2: Corporate tax
  • T3: Trust income tax and information return
  • T5013: Partnership information return
  • Preparation of T4 and T5 slips
  • GST / HST / PST
  • Form GST34
  • Form FIN400
  • GST / HST / QST return
  • Form RC7200
  • Lodging tax calculation and
    return filing (IN 260-V)
  • Calculating payroll taxes
  • Calculation of CCA (Capital Cost
  • Individual taxes
  • Form NAT 2541
  • Company tax return
  • Form NAT 0656-6
  • Quarterly BAS Report, including
    GST and PAYG
  • Preparation of Group Certificate
  • Calculation of Superannuation
  • GST returns
  • Annual filing of income tax for
    companies, Form CS & Form C
  • Personal income tax return
  • Calculation and filing of
    estimated chargeable income
  • Consolidation of financials in
    agreement with SFRS
  • Filing of annual return with
    ACRA in both XBRL and non-XBRL formats


International taxation is the study or discernment of tax on an individual or business subject to the tax laws of distinct countries or the international aspects of an individual country’s tax laws, as the case may be.

We provide Tax advisory services in USA taxation services in the US, UK, Canada, Australia and Singapore. We help companies with quarterly and annual tax provision calculations, validating tax balance sheet accounts, and tax processes and controls.

If you’re living abroad and fail to file your US or state taxes, you can receive a penalty for not filing taxes, even if you do not owe taxes. The failure to file a penalty could be thousands of dollars, disqualified from benefits that will reduce your tax obligation, or worse.

If you fail to pay taxes in the UK, the HMRC (Her Majesty’s Revenue and Customs) will charge penalties. You’ll be charged a penalty when your payment is 30 days late, then again at 6 and 12 months. In addition, HMRC charges interest on penalties. The penalty is 5% of the original amount you owe HMRC.

Even if you don’t owe anything, filing your taxes late can lead to complications. It would result in significant interest rates because the CRA (Credit Rating Agency) can’t apply interest on taxes that you don’t owe. In addition, filing your tax return late will lead to a late filing penalty of 5% of the balance owing, plus 1% interest of the balance owing for every month you’re late for up to 12 months.

If you don’t pay on time, you will automatically add a general interest charge (GIC) to what you owe. As a result, your debt will grow each day your debt remains unpaid. Interest calculates on a daily compounding basis on the amount outstanding and is added to your account periodically.

If you fail to pay our income tax for two or more years, you will be ordered to pay a penalty that is twice the tax amount you owe the IRAS (Inland Revenue Authority of Singapore) for that year, as well as a fine of up to $1000. In addition, failure to do so will result in imprisonment of up to six months.

At MAS, we aid you with your company’s international tax filings. We offer Tax advisory services in USA, leading-edge tax consultancy services, providing tangible advantages to our customers. We acknowledge national and international tax principles and local and global business customs. Our tax professionals are experts at managing all of the particular business and tax issues you currently face, as well as future challenges. Our skilled consultants will help you comply fully with all your company tax requirements. Finally, our tax experts examine and remediate the impact of your company reporting obligations on your global tax footprint.


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