| Document And Entity Information | 6 Months Ended |
| Sep. 30, 2024 | |
| Document Information Line Items | |
| Entity Registrant Name | RAYTECH HOLDING LIMITED |
| Document Type | 6-K |
| Current Fiscal Year End Date | --03-31 |
| Amendment Flag | false |
| Entity Central Index Key | 0001948443 |
| Document Period End Date | Sep. 30, 2024 |
| Document Fiscal Year Focus | 2025 |
| Document Fiscal Period Focus | Q2 |
| Entity File Number | 001-42100 |
| Unaudited Interim Condensed Consolidated Balance Sheets | Sep. 30, 2024 HKD ($) | Sep. 30, 2024 USD ($) | Mar. 31, 2024 HKD ($) | |
| CURRENT ASSETS | ||||
| Cash and cash equivalents | $ 81,047,102 | $ 10,431,712 | $ 35,885,666 | |
| Accounts receivable, net | 13,476,241 | 1,734,550 | 14,557,523 | |
| Amount due from a director | 145,166 | |||
| Merchandise inventories, net | 1,135,068 | 146,096 | 1,855,686 | |
| Taxes receivables | 104,085 | 13,397 | 395,005 | |
| Prepayments | 5,000 | 644 | 5,000 | |
| TOTAL CURRENT ASSETS | 95,767,496 | 12,326,399 | 52,844,046 | |
| NON-CURRENT ASSETS | ||||
| Property and equipment, net | ||||
| Deferred initial public offering costs | 5,252,768 | |||
| Long-term deposits | 16,200 | 2,085 | 16,200 | |
| TOTAL NON-CURRENT ASSETS | 16,200 | 2,085 | 5,268,968 | |
| TOTAL ASSETS | 95,783,696 | 12,328,484 | 58,113,014 | |
| CURRENT LIABILITIES | ||||
| Accounts payable | 1,098,929 | 141,445 | 732,340 | |
| Accruals | 920,901 | 118,531 | 1,018,618 | |
| Contract liabilities | 1,008,415 | |||
| TOTAL CURRENT LIABILITIES | 22,438,011 | 2,888,035 | 27,037,713 | |
| TOTAL LIABILITIES | 22,438,011 | 2,888,035 | 27,037,713 | |
| COMMITMENTS AND CONTINGENCIES | ||||
| SHAREHOLDERS’ EQUITY | ||||
| Ordinary Shares, US$0.00000625 par value, 8,000,000,000 Ordinary Shares authorized, 16,000,000 shares and 17,613,083 shares issued and outstanding as of March 31, 2024 and September 30, 2024, respectively(1) | [1] | 862 | 110 | 783 |
| Additional paid-in capital | 37,717,487 | 4,854,683 | 99,217 | |
| Retained earnings | 35,627,336 | 4,585,656 | 30,975,301 | |
| TOTAL SHAREHOLDERS’ EQUITY | 73,345,685 | 9,440,449 | 31,075,301 | |
| TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY | 95,783,696 | 12,328,484 | 58,113,014 | |
| Related Party | ||||
| CURRENT LIABILITIES | ||||
| Accounts payable - related party | $ 20,418,181 | $ 2,628,059 | $ 24,278,340 | |
| [1]1,500,000 ordinary shares were issued on May 15, 2024, and 113,083 ordinary shares were issued on July 5, 2024. | ||||
| Unaudited Interim Condensed Consolidated Balance Sheets (Parentheticals) - $ / shares | Sep. 30, 2024 | Mar. 31, 2024 | |
| Statement of Financial Position [Abstract] | |||
| Ordinary Shares, par value (in Dollars per share) | $ 0.00000625 | ||
| Ordinary Shares, Authorized | [1] | 8,000,000,000 | 8,000,000,000 |
| Ordinary Shares, shares issued | [1] | 17,613,083 | 16,000,000 |
| Ordinary Shares, shares outstanding | [1] | 17,613,083 | 16,000,000 |
| [1]1,500,000 ordinary shares were issued on May 15, 2024, and 113,083 ordinary shares were issued on July 5, 2024. | |||
| Unaudited Interim Condensed Consolidated Statements of Income | 6 Months Ended | |||
| Sep. 30, 2024 HKD ($) $ / shares shares | Sep. 30, 2024 USD ($) $ / shares shares | Sep. 30, 2023 HKD ($) $ / shares shares | ||
| REVENUE | ||||
| Total revenue | $ 43,248,906 | $ 5,566,641 | $ 33,017,199 | |
| OPERATING EXPENSES | ||||
| Merchandise costs | (34,100,724) | (4,389,163) | (24,305,564) | |
| Selling, general and administrative expenses | (5,229,459) | (673,093) | (1,751,531) | |
| Total operating expenses | (39,330,183) | (5,062,256) | (26,057,095) | |
| INCOME FROM OPERATIONS | 3,918,723 | 504,385 | 6,960,104 | |
| OTHER INCOME (EXPENSE) | ||||
| Interest income | 1,431,474 | 184,248 | 615,405 | |
| Interest expense | (1,657) | |||
| Loss from foreign currency exchange | (407,242) | (52,417) | (16,334) | |
| Total other income, net | 1,024,232 | 131,831 | 597,414 | |
| INCOME BEFORE INCOME TAX PROVISION | 4,942,955 | 636,216 | 7,557,518 | |
| PROVISION FOR INCOME TAXES | (290,920) | (37,445) | (1,139,449) | |
| NET INCOME | $ 4,652,035 | $ 598,771 | $ 6,418,069 | |
| WEIGHTED AVERAGE NUMBER OF ORDINARY SHARES | ||||
| Basic (in Shares) | [1] | 17,184,908 | 17,184,908 | 16,000,000 |
| Diluted (in Shares) | [1] | 17,184,908 | 17,184,908 | 16,000,000 |
| EARNINGS PER SHARE | ||||
| Basic (in Dollars per share and Dollars per share) | (per share) | $ 0.27 | $ 0.03 | $ 0.4 | |
| Diluted (in Dollars per share and Dollars per share) | (per share) | $ 0.27 | $ 0.03 | $ 0.4 | |
| Sales of Products | ||||
| REVENUE | ||||
| Sales | $ 42,101,829 | $ 5,418,999 | $ 26,011,185 | |
| Sales of Tooling | ||||
| REVENUE | ||||
| Sales | $ 1,147,077 | $ 147,642 | $ 7,006,014 | |
| [1]1,500,000 ordinary shares were issued on May 15, 2024, and 113,083 ordinary shares were issued on July 5, 2024. | ||||
| Unaudited Interim Condensed Consolidated Statements of Changes in Shareholders’ Equity | Ordinary shares HKD ($) shares | Ordinary shares USD ($) shares | Additional Paid-in Capital HKD ($) | Additional Paid-in Capital USD ($) | Retained Earnings HKD ($) | Retained Earnings USD ($) | HKD ($) shares | USD ($) shares | |||||
| Balance (in Dollars) | $ 783 | $ 99,217 | $ 21,038,507 | $ 21,138,507 | |||||||||
| Balance at Mar. 31, 2023 | $ 783 | 99,217 | 21,038,507 | 21,138,507 | |||||||||
| Balance (in Shares) at Mar. 31, 2023 | shares | [1] | 16,000,000 | 16,000,000 | ||||||||||
| Net income | 6,418,069 | 6,418,069 | |||||||||||
| Balance at Sep. 30, 2023 | $ 783 | 99,217 | 27,456,576 | 27,556,576 | |||||||||
| Balance (in Shares) at Sep. 30, 2023 | shares | [1] | 16,000,000 | 16,000,000 | ||||||||||
| Balance (in Dollars) | $ 783 | 99,217 | 27,456,576 | 27,556,576 | |||||||||
| Balance (in Dollars) | 783 | 99,217 | 30,975,301 | 31,075,301 | |||||||||
| Balance at Mar. 31, 2024 | $ 783 | 99,217 | 30,975,301 | $ 31,075,301 | |||||||||
| Balance (in Shares) at Mar. 31, 2024 | shares | 16,000,000 | [1] | 16,000,000 | [1] | 16,000,000 | [2] | 16,000,000 | [2] | |||||
| Initial Public Offering of shares | $ 79 | 37,618,270 | $ 37,618,349 | ||||||||||
| Initial Public Offering of shares (in Shares) | shares | [1] | 1,613,083 | 1,613,083 | ||||||||||
| Net income | 4,652,035 | 4,652,035 | $ 598,771 | ||||||||||
| Balance at Sep. 30, 2024 | $ 862 | $ 110 | 37,717,487 | $ 4,854,683 | 35,627,336 | $ 4,585,656 | $ 73,345,685 | $ 9,440,449 | |||||
| Balance (in Shares) at Sep. 30, 2024 | shares | 17,613,083 | [1] | 17,613,083 | [1] | 17,613,083 | [2] | 17,613,083 | [2] | |||||
| Balance (in Dollars) | $ 862 | $ 110 | $ 37,717,487 | $ 4,854,683 | $ 35,627,336 | $ 4,585,656 | $ 73,345,685 | $ 9,440,449 | |||||
| [1]1,500,000 ordinary shares were issued on May 15, 2024, and 113,083 ordinary shares were issued on July 5, 2024.[2]1,500,000 ordinary shares were issued on May 15, 2024, and 113,083 ordinary shares were issued on July 5, 2024. | |||||||||||||
| Unaudited Interim Condensed Consolidated Statements of Cash Flows | 6 Months Ended | ||
| Sep. 30, 2024 HKD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 HKD ($) | |
| Cash flows from operating activities | |||
| Net income | $ 4,652,035 | $ 598,771 | $ 6,418,069 |
| Adjustments to reconcile net income to net cash provided by operating activities | |||
| Depreciation of property and equipment | 2,928 | ||
| Amortization of right-of-use asset | 51,286 | ||
| Loss from unrealized foreign currency translation | 406,530 | 52,325 | 17,918 |
| Changes in operating assets and liabilities | |||
| Accounts receivable, net | 978,597 | 125,957 | (654,485) |
| Merchandise inventories, net | 720,618 | 92,752 | (681,683) |
| Prepayments | 54,000 | ||
| Accounts payable | 372,876 | 47,994 | (150,807) |
| Accounts payable - related party | (3,694,385) | (475,511) | 12,178,316 |
| Accruals | (97,717) | (12,577) | (203,832) |
| Contract liabilities | (1,008,415) | (129,795) | (1,705,854) |
| Operating lease obligation | (52,344) | ||
| Taxes receivables | 290,920 | 37,445 | |
| Taxes payables | 1,139,449 | ||
| Net cash provided by operating activities | 2,621,059 | 337,361 | 16,412,961 |
| Cash flows from investing activities | |||
| Repayment of amount due from a director | 145,166 | 18,684 | 210,702 |
| Net cash provided by investing activities | 145,166 | 18,684 | 210,702 |
| Cash flows from financing activities | |||
| Proceed from Initial Public Offering of shares | 42,772,241 | 5,505,289 | |
| Deferred initial public offering cost | (257,702) | ||
| Net cash (used in)/from financing activities | 42,772,241 | 5,505,289 | (257,702) |
| Change in cash | 45,538,466 | 5,861,334 | 16,365,961 |
| Effect of foreign exchange on cash | (377,030) | (48,528) | 35,039 |
| Cash at the beginning of the period | 35,885,666 | 4,618,906 | 21,362,580 |
| Cash at the end of the period | 81,047,102 | 10,431,712 | 37,763,580 |
| Supplementary cash flow information | |||
| Cash paid for income tax | |||
| Cash paid for interest expense | |||
